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This is a list of states in the Holy Roman Empire beginning with the letter R:
| Name | Type | Imperial circle | Imperial diet | History |
|---|---|---|---|---|
 Rabenswalde-Wiehe | County | n/a | n/a | 1227: Partitioned from Käfernburg 1255: Acquired Bucha 1312: Extinct; to Weimar-Orlamünde-Weimar |
 Rantzau (Ranzau; Rantzow) | County | Low Sax | WE | 1649: Christian Rantzau purchased part of Pinneberg from Holstein-Gottorp 1650: Lower Saxon Circle 1726: To Denmark |
 Rapperswil (Rapperschwyl) | Lordship 1233: County | n/a | n/a | 1099: First mentioned; branch of the Counts of Wandelburg 1233: HRE Count 1283: Extinct in male line; most seized by Austria 1309: Remaining territory to Habsburg-Laufenburg by marriage 1352: City of Rapperswil to Austria (see below) 1353: Divided between Habsburg-Laufenburg-Neu-Rapperswil and Habsburg-Laufenburg-Alt-Rapperswil |
 Rapperswil (Rapperschwyl) | Imperial City | n/a | n/a | 1229: City founded by Rapperswil 1309: To Habsburg-Laufenburg 1352: To Austria 1415: Free Imperial City 1442: To Austria 1464: Protectorate of the Swiss Confederation 1648: Left the Empire as part of Switzerland |
 Rappoltstein | Lordship 1651: County | SW | 942: First mentioned 1082: Made fief of the Bishopric of Worms 1157: Extinct in male line; to Urslingen by marriage 1219: Urslingen assumed the name Rappoltstein 1227: Sold Kaysersberg to the Emperor 12??: Imperial immediacy 1293: Partitioned into Rappoltstein-Hohenack, Rappoltstein-Groß-Rappoltstein and Rappoltstein-Hohen-Rappoltstein 1436: Reunited by Rappoltstein-Hohen-Rappoltstein 1437: Acquired Hohenack 1651: HRE Count 1673: Extinct; to Palatinate-Zweibrücken-Birkenfeld-Bischweiler | |
| Rappoltstein-Groß-Rappoltstein | Lordship | n/a | n/a | 1293: Partitioned from Rappoltstein 1338: Acquired Hohen-Rappoltstein 1351: Acquired Hohenack 1368: Partitioned into itself and Rappoltstein-Hohen-Rappoltstein 1377: Extinct in male line 1400: Extinct; to Lupfen |
| Rappoltstein-Hohenack | Lordship | n/a | n/a | 1293: Partitioned from Rappoltstein 1351: Extinct; to Rappoltstein-Groß-Rappoltstein |
| Rappoltstein-Hohen-Rappoltstein | Lordship | n/a | n/a | 1293: Partitioned from Rappoltstein 1338: To Rappoltstein-Groß-Rappoltstein 1341: Extinct 1368: Partitioned from Rappolstein-Groß-Rappoltstein 1419: Acquired Groß-Rappoltstein 1436: Renamed to Rappoltstein |
 Ratzeburg | Prince-Bishopric | Low Sax | EC | c. 1050: Diocese established 1066: See destroyed in uprising 1154: Reestablished 1236: HRE Prince of the Empire; Imperial immediacy 1648: Secularized as Principality for Mecklenburg-Schwerin |
 Ratzeburg | Principality | Low Sax | PR | 1648: Ratzeburg secularised and given to Mecklenburg-Schwerin 1701: To Mecklenburg-Strelitz |
 Ravensberg | 1180: County | Low Rhen | n/a | 1170: Renamed from Calvelage; fief of Saxony 1180: Imperial immediacy 1226: Partitioned into Vechta and itself 1252: Vechta sold to Münster 1346: Extinct; to Berg 1437: To Jülich-Berg 1521: To Jülich-Cleves-Berg 1614: To Brandenburg 1807: To Westphalia 1814: To Prussia |
 Ravensburg | Imperial City | Swab | SW | 1088: First mentioned; seat of the Welfs 1191: To Hohenstaufen 1268: To the Empire directly 1276: Free Imperial City 1803: To Bavaria 1810: To Württemberg |
 Ravenstein | Barony | n/a | n/a | 1150: To Cuijk c. 1170: To Herpen; later superseded by Ravenstein and the local barons assumed the name Ravenstein 1324: Extinct in male line; to Valkenburg by marriage 1396: To Salm 1397: To Cleves-Marck 1450: To Cleves-Ravenstein 1528: To Jülich-Cleves-Berg 1609: To the Netherlands 1621: To Brandenburg 1630: To Palatinate-Zweibrücken-Neuburg 1695: To the Palatinate 1794: To France 1800: To the Batavian Republic 1806: To Holland 1810: To France 1815: To the Netherlands |
 Rechberg | Duchy | n/a | 1179: First mentioned 13th Century: Partitioned into Rechberg auf den Bergen and Rechberg unter den Bergen | |
| Rechberg auf den Bergen Lordship | n/a | n/a | 13th Century: Partitioned from Rechberg c. 1327: Partitioned into Rechberg-Staufeneck and Rechberg-Hohenrechberg | |
| Rechberg-Babenhausen | Lordship | n/a | n/a | 1432: Partitioned from Rechberg-Staufeneck 1439: Acquired Mindelheim 14??: 1467: Mindelheim sold to Frundsberg 1507: Extinct; to Rechberg-Brandenburg |
| Rechberg-Brandenburg | Lordship | n/a | n/a | 1460: Partitioned from Rechberg-Illereichen 1481: Acquired Brandenburg an der Iller 1507: Acquired Babenhausen 1537: Extinct; to Rechberg-Kellmünz |
| Rechberg-Donzdorf | Lordship 1601: Barony 1699: County | n/a | n/a | 1574: Partitioned from Rechberg-Illereichen 1601: HRE Baron 1605: Partitioned into itself and Rechberg-Hohenrechberg and Aichen 1682: Acquired Ramsberg 1699: HRE Count 1732: Extinct; to Rechberg-Osterberg |
| Rechberg-Gammertingen | Lordship | n/a | n/a | 1437: Partitioned from Rechberg-Hohenrechberg 1449: Formed Lordship of Schramberg 1459: Henry acquired Schwarzenberg; formed line Rechberg-Schwarzenberg 1526: Sold Lordship of Schramberg to Landenberg c. 1570: Extinct |
| Rechberg-Heuchlingen | Lordship | n/a | n/a | 1540: Partitioned from Rechberg-Hohenrechberg 1573: Inherited Rechberg-Hohenrechberg and assumed that name |
| Rechberg-Hohenrechberg | Lordship | n/a | n/a | c. 1327: Partitioned from Rechberg auf den Bergen 1374: Acquired Rechberghausen 1437: Partitioned into Rechberg-Weißenstein, itself and Rechberg-Gammertingen 1540: Partitioned into itself and Rechberg-Heuchlingen 1573: Inherited by Rechberg-Heuchlingen 1585: Extinct; to Rechberg-Staufeneck |
| Rechberg-Hohenrechberg and Aichen | Barony 1626: County | n/a | n/a | 1605: Partitioned from Rechberg-Donzdorf 1626: HRE Count 1676: Extinct in male line 1677: To Limburg-Styrum-Illereichen by marriage |
| Rechberg-Illereichen | Lordship 1601: Barony | n/a | n/a | 1351: Partitioned from Rechberg-Staufeneck 1430: Partitioned into itself and Rechberg-Scharfenberg 1460: Partitioned into itself, Rechberg-Kronburg and Rechberg-Brandenburg 1568: Acquired Donzdorf 1574: Partitioned into itself, Rechberg-Rechberghausen and Rechberg-Donzdorf 1601: HRE Baron 1619: Extinct; to Rechberg-Hohenrechberg and Aichen |
| Rechberg-Kellmünz | Lordship | n/a | n/a | 1506: Partitioned from Rechberg-Kronburg 1539: Sold Babenhausen to Fugger 1573: To Rechberg-Kronberg 1578: Extinct |
| Rechberg-Kronburg | Lordship 1577: Barony | n/a | n/a | 1460: Partitioned from Rechberg-Illereichen 1506: Partitioned into itself and Rechberg-Kellmünz 1540: Partitioned into itself, Rechberg-Türkheim-Schwabeck and Rechberg-Osterberg 1573: Acquired Kellmünz 1577: HRE Baron 1604: Extinct; to Westernach |
| Rechberg-Osterberg | Lordship 1601: Barony 1810: County | n/a | n/a | 1540: Partitioned from Rechberg-Kronburg 1601: HRE Baron 16??: Partitioned into Rechberg-Weißenstein and itself 1806: To Württemberg 1810: To Bavaria; Raised to County and assumed the name Rechberg and Rothenlöwen |
| Rechberg-Ramsberg | Lordship | n/a | n/a | 1468: Partitioned from Rechberg-Scharfenberg 1529: Extinct; to Pappenheim-Rothenstein |
| Rechberg-Rechberghausen | Lordship | n/a | n/a | 1574: Partitioned from Rechberg-Illereichen 1596: Partitioned into Rechberg-Rechberghausen-Unterwaldstetten and Rechberg-Rechberghausen-Rechberghausen |
| Rechberg-Rechberghausen-Rechberghausen | Lordship 1642: Barony | n/a | n/a | 1596: Partitioned from Rechberg-Rechberghausen 1642: HRE Baron 1672: Sold Unterwaldstetten to Grafeneck-Eglingen 1677: Extinct; to Rechberg-Donzdorf |
| Rechberg-Rechberghausen-Unterwaldstetten | Lordship | n/a | n/a | 1596: Partitioned from Rechberg-Rechberghausen 1640: Extinct; to Rechberg-Rechberghausen-Rechberghausen |
| Rechberg-Schwabeck | Lordship 1598: Barony | n/a | n/a | 1596: Partitioned from Rechberg-Türkheim-Schwabeck 1598: HRE Baron 1620: Extinct; to Rechberg-Osterberg |
| Rechberg-Scharfenberg | Lordship | n/a | n/a | 1430: Partitioned from Rechberg-Illereichen 1468: Partitioned into Rechberg-Ramsberg and itself 1547: Extinct; to Rechberg-Illereichen |
| Rechberg-Schwarzenberg | Lordship | n/a | n/a | 1459: Established when Henry of Rechberg-Gammertingen acquired Schwarzenberg through marriage 1542: Extinct; to Ehingen |
| Rechberg-Staufeneck | Lordship | n/a | n/a | c. 1327: Partitioned from Rechberg auf den Bergen 1330: Acquired Illereichen 1351: Partitioned into itself and Rechberg-Illereichen 1432: Partitioned into Rechberg-Babenhausen and itself 1599: Extinct; divided between Getrude von Schutzbar and Württemberg 1601: Hohenrechberg sold to Rechberg-Donzdorf 1604: All to Getrude von Schutzbar 1623: Sold to Württemberg |
| Rechberg-Türkheim-Schwabeck | Lordship | n/a | n/a | 1540: Partitioned from Rechberg-Kronburg 1597: Partitioned into Rechberg-Schwabeck and Rechberg-Weißenstein |
| Rechberg unter den Bergen | Lordship | n/a | n/a | 13th Century: Partitioned from Rechberg 1316: Acquired Sindelfingen and Kellmünz 1351: Sindelfingen sold to Württemberg-Urach and Württemberg-Stuttgart 1366: Heuchlingen and Rechberghausen sold to Austria 1413: Extinct; to Rechberg-Hohenrechberg |
| Rechberg-Weißenstein | Lordship | n/a | n/a | 1437: Partitioned from Rechberg-Hohenrechberg 1443: Acquired Krautheim and Ballenberg as fief of Mainz 1550: Extinct; to Rechberg-Kronburg |
| Rechberg-Weißenstein | Lordship 1597: Barony 1607: County | n/a | n/a | 1596: Partitioned from Rechberg-Türkheim-Schwabeck 1597: HRE Baron 1607: HRE Count 1618: Extinct; to Rechberg-Schwabeck |
| Rechberg-Weißenstein | Barony | n/a | n/a | 16??: Partitioned from Rechberg-Osterberg 1738: Extinct; to Rechberg-Osterberg |
 Rechteren-Limpurg-Speckfeld | County | Franc | FR | 1713: Renamed from Rechteren when inherited a portion of Limpurg 1806: To Württemberg |
 Reckheim See: Rekem | ||||
 Regensburg (Ratisbon) | Bishopric | Bav | EC | 739: Formed 13th Century: HRE Prince of the Empire 1803: Merged with other territories to form Archbishopric (see below) |
 Regensburg (Ratisbon) | Electoral Archbishopric | Bav | EC | 1803: Mainz, Regensburg and other territories combined for Karl Theodor von Dalberg 1810: To Bavaria; Karl Theodor von Dalberg obtained Frankfurt |
 Regensburg (Ratisbon) | Imperial City | Bav | SW | 1245: Free Imperial City 1803: To Archbishopric of Regensburg 1810: To Bavaria |
 Regenstein (Reinstein) | County | n/a | n/a | 1162: Partitioned from Blankenburg; fief of Saxony 1180: Fief of Halberstadt 1202: Fief of Brunswick and Lüneburg 1224: Partitioned into Regenstein Elder Line and Regenstein Younger Line |
| Regenstein (Reinstein) | County | n/a | n/a | 1599: To Halberstadt 1644: To Tannenbach as fief of Halberstadt 1671: To Halberstadt 1807: To Westphalia 1815: To Prussia |
| Regenstein-Blankenburg | County | n/a | n/a | 1368: Formed by Regenstein-Hainburg after acquiring Blankenburg 1599: Extinct; to Halberstadt See: Blankenburg and Regenstein |
| Regenstein Elder Line | County | n/a | n/a | 1224: Partitioned from Regenstein; fief of Brunswick and Lüneburg 1328: Extinct; to Regenstein-Regenstein |
| Regenstein-Hainburg | County | n/a | n/a | 1248: Partitioned from Regenstein Younger Line; fief of Brunswick and Lüneburg 1344: Fief of Halberstadt 1366: Acquired Regenstein 1368: Acquired Blankenburg; renamed to Regenstein-Blankenburg |
| Regenstein-Regenstein | County | n/a | n/a | 1248: Partitioned from Regenstein Younger Line; fief of Brunswick and Lüneburg 1344: Fief of Halberstadt 1366: Extinct; to Regenstein-Hainburg |
| Regenstein Younger Line | County | n/a | n/a | 1224: Partitioned from Regenstein; fief of Brunswick and Lüneburg 1248: Partitioned into Regenstein-Regenstein and Regenstein-Hainburg |
 Reichelsberg (Reichsberg; Reichelsburg) | Lordship County | Franc | n/a | 1230: First mentioned; property of Brauneck as fief of Bamberg 1249: To Brauneck-Brauneck as fief of Bamberg 1390: To Würzburg 1401: To Weinsberg 1516: To Königstein 1521: To Würzburg 1671: To Schönborn 1806: To Bavaria |
 Reichenau | Abbacy | Swab | SP | 724 ????: Imperial immediacy 1540: To the Bishopric of Constance 1803: Secularised; to Baden |
 Reichenstein | Lordship | Low Rhen | WE | 1332: Lordship established by Waldbott von Neuerburg 1506: Waldbott von Neuerburg extinct; to Sombreffe 1523: To Wied 1698: To Nesselrode-Reichenstein 1702: Bench of Westphalian Counts 1776: To Nesselrode-Landskron 1806: To Berg 1815: To Prussia |
 Reichenweier (Riquewihr) | Lordship | n/a | n/a | 1049: First mentioned; to Egisheim-Dagsburg 1269: To Horburg 1324: To Württemberg 1680: Left the Empire as part of France 1796: To France directly |
 Reifferscheid (Reifferscheidt) | Lordship | n/a | n/a | 12th Century: First mentioned c. 1195: Partitioned into itself and Wildenburg 1273: Acquired Malberg; side line established 1354: Acquired Bedburg 1366: Partitioned into Reifferscheid-Gladbach and Reifferscheid-Bedburg |
| Reifferscheid-Bedburg | Lordship | n/a | n/a | 1366: Partitioned from Reifferscheid 1394–5: Acquired Dyck 1460: Acquired Salm in the Ardennes; renamed to Salm-Reifferscheid |
| Reifferscheid-Gladbach | Lordship | n/a | n/a | 1366: Partitioned from Reifferscheid 1426: Extinct |
 Reipoltskirchen | Lordship | Upp Rhen | WE | 1198: First mentioned 1276: To Hohenfels 1277: To Hohenfels-Reipoltskirchen 1602: Extinct; divided and shared between numerous families 1793: To France 1815: To Bavaria |
| Rekem (Reckheim) | Lordship 1356: Barony 1623: County | Low Rhen | WE | 1108: First mentioned 1140: Extinct; to Bronchhorst 1317: To Mark-Rekem 1335: To Stein 1356: HRE Baron 1397: To Sombreffe 1501: To Pirmont 1514: To Mark-Arenberg 1545: To Hennin 1553: To Vlodrop 1564: To Quadt-Wickrath 1590: To Aspremont-Lynden 1623: HRE Count; Joined the Westphalian Counts 1795: To France 1815: To the Netherlands 1830: To Belgium |
 Remiremont | Abbacy | n/a | n/a | 620: Formed 1070: Imperial immediacy 1290: HRE Princess of the Empire 1566: To Lorraine 1790: Secularized to France |
 Retersbeck (Reitersbach) | Lordship | n/a | n/a | 1290: First mentioned 1410: Inherited Schaesberg; took the name Retersbeck von Schaesberg and shortly after Schaesberg |
 Reuss (Reuß)House began at Reuss-Plauen; branch of Weida | ||||
| Reuss-Burgk | Advocacy (Vogtei) 1673: County | Upp Sax | WT | 1583: Partitioned from Reuss-Unter-Greiz 1616: Partitioned into itself and Reuss-Dölau 1640: Extinct; Burgk to Reuss-Unter-Greiz, Dölau to Reuss-Ober-Greiz 1668: Partitioned from Reuss-Unter-Greiz 1673: HRE Count 1697: Extinct; to Reuss-Unter-Greiz |
| Reuss-Dölau | Advocacy (Vogtei) 1694: County | Upp Sax | WT | 1616: Partitioned from Reuss-Burgk 1636: Extinct; to Reuss-Burgk 1694: Partitioned from Reuss-Ober-Greiz 1698: Extinct; to Reuss-Ober-Greiz |
| Reuss-Ebersdorf | County 1806: Principality | Upp Sax | WT | 1678: Partitioned from Reuss-Lobenstein 1806: HRE Prince |
| Reuss Elder Line | Principality | Upp Sax | WT / PR | 1778: Renamed from Reuss-Greiz; HRE Prince 1803: Bench of Princes After May 1778: First-ever appearance of the black-red-gold tricolour flag in its modern arrangement in any sovereign state within what today comprises Germany |
| Reuss-Gera (Reuss Younger Line) | Advocacy (Vogtei) 1673: County | Upp Sax | WT | 1564: Partitioned from Reuss-Greiz 1647: Partitioned into itself, Reuss-Saalburg, Reuss-Schleiz and Reuss-Lobenstein 1666: Acquired Saalburg 1673: HRE Count 1802: Extinct; joint rule by Reuss-Schleiz, Reuss-Lobenstein and Reuss-Ebersdorf |
| Reuss-Greiz | Advocacy (Vogtei) 1768: County | Upp Sax | WT | 1359: Partitioned from Reuss-Plauen 1368: Partitioned into Reuss-Greiz Hinterschloss and Reuss-Greiz Vorderschloss 1462: Reunited by Reuss-Greiz Hinterschloss 1485: Partitioned into itself and Reuss-Kranichfeld 1564: Partitioned into Reuss-Unter-Greiz, Reuss-Ober-Greiz and Reuss-Gera 1768: Renamed from Reuss-Ober-Greiz 1778: Renamed to Reuss Elder Line |
| Reuss-Greiz Hinterschloss | Advocacy (Vogtei) | n/a | n/a | 1368: Partitioned from Reuss-Plauen 1394: Sold half of Wiesenburg to Meissen 1449: Extinct; to Henry VIII of Reuss-Greiz Vorderschloss 1462: Renamed to Reuss-Greiz |
| Reuss-Greiz Vorderschloss | Advocacy (Vogtei) | n/a | n/a | 1368: Partitioned from Reuss-Plauen 1449: To Henry X 1451: Acquired Kranichfeld 1462: Extinct; to Reuss-Greiz Hinterschloss |
| Reuss-Hirschberg | County | Upp Sax | WT | 1678: Partitioned from Reuss-Lobenstein 1711: Extinct; divided between Reuss-Lobenstein and Reuss-Ebersdorf |
| Reuss-Köstritz | County 1806: Principality | n/a | n/a | 1692: Appanage created within Reuss-Schleiz 1806: HRE Prince |
| Reuss-Kranichfeld | Advocacy (Vogtei) | Upp Sax | WT | 1485: Partitioned from Reuss-Greiz 1497: Acquired Schauenforst 1529: Extinct; to Reuss-Greiz |
| Reuss-Lobenstein | Advocacy (Vogtei) 1673: County 1806: Principality | Upp Sax | WT | 1647: Partitioned from Reuss-Gera 1664: Acquired Hirschberg 1673: HRE Count 1678: Partitioned into itself, Reuss-Hirschberg and Reuss-Ebersdorf 1718: Side line Reuss-Selbitz founded 1805: Inherited by Reuss-Selbitz 1806: HRE Prince |
| Reuss-Ober-Greiz (Reuss Intermediate Line) | Advocacy (Vogtei) | Upp Sax | WT | 1564: Partitioned from Reuss-Greiz 1577: Acquired Lobenstein 1588: Sold Lobenstein to Reuss-Gera 1590: Acquired Schleiz, Saalburg and Burgk 1616: Extinct; Ober-Greiz to Reuss-Unter-Greiz, Schleiz to Reuss-Gera |
| Reuss-Ober-Greiz | Advocacy (Vogtei) 1673: County | Upp Sax | WT | 1625: Partitioned from Reuss-Unter-Greiz 1673: HRE Count 1694: Partitioned into itself and Reuss-Dölau 1768: Renamed to Reuss-Greiz |
| Reuss-Plauen (Reuß von Plauen) | Advocacy (Vogtei) | n/a | n/a | 1309: Name adopted by Plauen Younger Line; branch of Weida 1359: Partitioned into Reuss-Greiz and Reuss-Ronneburg |
| Reuss-Ronneburg | Advocacy (Vogtei) | n/a | n/a | 1359: Partitioned from Reuss-Plauen 1384: Acquired Schmölln 1398: Extinct; to Reuss-Greiz |
| Reuss-Rothenthal | Advocacy (Vogtei) 1673: County | Upp Sax | WT | 1668: Partitioned from Reuss-Unter-Greiz 1673: HRE Count 1698: Extinct; to Reuss-Unter-Greiz |
| Reuss-Saalburg | Advocacy (Vogtei) | Upp Sax | WT | 1647: Partitioned from Reuss-Gera 1666: Saalburg to Reuss-Gera; formed Reuss-Schleiz |
| Reuss-Schleiz | Advocacy (Vogtei) 1673: County 1806: Principality | Upp Sax | WT | 1647: Partitioned from Reuss-Gera 1666: Extinct; inherited by Reuss-Saalburg 1673: HRE Count 1692: Appanage Reuss-Köstritz created 1806: HRE Prince |
| Reuss-Selbitz | Advocacy (Vogtei) 1673: County | Upp Sax | WT | 1718: Formed when Henry XXVI of Reuss-Lobenstein acquired Selbitz by marriage 1805: Inherited Reuss-Lobenstein |
| Reuss-Unter-Greiz (Reuss Elder Line) | Advocacy (Vogtei) 1673: County | Upp Sax | WT | 1564: Partitioned from Reuss-Greiz 1583: Partitioned into Reuss-Burgk and itself 1616: Acquired Ober-Greiz 1625: Partitioned into Reuss-Ober-Greiz and itself 1668: Partitioned into Reuss-Burgk, itself and Reuss-Rothenthal 1673: HRE Count 1768: Extinct; to Reuss-Ober-Greiz |
 Reutlingen | Imperial City | Swab | SW | 1240: Free Imperial City 1803: To Württemberg |
 Rheda | Lordship | n/a | n/a | 1170: First mentioned 1190: Extinct; to Lippe 1344: To Lippe-Rheda 1365: To Tecklenburg 1562: To Bentheim-Steinfurt 1605: To Bentheim-Tecklenburg-Rheda 1808: To Berg 1815: To Prussia |
 Rheineck | Burgraviate | El Rhin | WE | 11th Century: first mentioned; to a branch of Salm 1155: Extinct; to Cologne 1180: To Ulmen as fief of Cologne 1539: To Metternich-Brohl as fief of Cologne 1556: To Metternich-Schweppenburg as fief of Cologne 1571: To Warsberg 1654: To Sinzendorf-Ernstbrunn 1796: To France 1815: To Prussia |
 Rheinfelden | County | n/a | n/a | 10th Century: Formed 1090: Extinct; to Zähringen 1218: To the Emperor directly; city immediate (see below) |
| Rheinfelden | Imperial City | n/a | n/a | 1218: Free Imperial City 1253: To Basel 1279: Free Imperial City 1330: To Austria 1415: Free Imperial City 1439: To Austria 1467: To Burgundy 1477: To Austria 1638: To Sweden 1647: To France 1650: To Austria 1799: Left bank to France 1803: Left bank to Fricktal, canton of the Helvetic Republic. Right bank to Breisgau-Modena 1805: Right bank to Baden |
 Rheingrafschaft See: Rhinegraviate | ||||
 Rheintal | Lordship / Bailiwick | n/a | n/a | 1348: Formed by Werdenberg 1395: To Austria 1405: To Appenzell 1424: to Toggenburg 1464: Condominium of the Swiss Confederation 1648: Left the Empire as part of Switzerland |
| Rhinegraviate (Rheingau; Rheingrafschaft) | Rhinegraviate | n/a | n/a | 1019: Rheingau invested upon the Embrichonids; fiefs of Mainz 1170: Imperial immediacy 1194: Half to Stein 1223: Extinct; all to Stein |
 Riedesel zu Eisenbach | Lordship 1684: Barony | n/a | n/a | 1428: Riedesel acquired Eisenbach and Lauterbach as fief of Fulda 1684: Imperial immediacy; HRE Baron 1806: To the Grand Duchy of Hesse (Hesse-Darmstadt) |
 Rieneck | County | n/a | n/a | 11th Century: First mentioned 1101: Extinct in male line 1108: To Loon by marriage c. 1195: Partitioned from Loon 1295: Partitioned into Rieneck-Rothenfels and Rieneck-Lohr 1333: Rieneck-Lohr 1366: Made fief of Mainz 15th Century: Partitioned into Rieneck-Grünsfeld and Rieneck-Lohr |
| Rieneck | County | Franc | FR | 1559: Condominium between Mainz (3/4) and Hanau-Münzenberg (1/4) 1673: Mainz portion sold to Nostiz-Rieneck 1803: Nostiz-Rieneck portion sold to Colloredo-Mansfeld 1806: To Regensburg 1815: To Bavaria |
| Rieneck-Grünsfeld | County | n/a | n/a | 15th Century: Partitioned from Rieneck 1502: Extinct; to Würzburg |
| Rieneck-Lohr | County | Franc | FR | 1295: Partitioned from Rieneck 1333: Renamed to Rieneck 15th Century: Partitioned from Rieneck 1559: Extinct; divided between Mainz and Würzburg |
| Rieneck-Rothenfels | County | n/a | n/a | 1295: Partitioned from Rieneck 1333: Extinct; divided between Mainz, Würzburg and Rieneck-Lohr |
 Rietberg | Lordship 1353: County | Low Rhen | WE | 1237: Formed when Conrad I of Cuijk-Arnsberg acquired Rietberg from Lippe 1353: HRE Count 1456: Made fief of Hesse-Cassel 1562: To Hesse-Cassel directly 1565: Restored 1618: To John III, a scion of East Frisia 1690: Under Imperial administration 1702: Restored 1758: Extinct; to Kaunitz-Rietberg 1807: To Westphalia 1815: To Prussia |
 Rixingen | Lordship 1310: County | n/a | n/a | 1191: First mentioned; to Werd 1218: Partitioned from Werd 1310: Extinct; to Leiningen-Dagsburg 1317: To Leiningen-Hardenburg 1343: To Leiningen-Rixingen 1506: To Zweibrücken-Bitsch 1570: To Leiningen-Westerburg-Leiningen 1622: To Leiningen-Westerburg-Rixingen 1661: Left the Empire; part of France 1705: To Leiningen-Westerburg-Altleiningen and Leiningen-Westerburg-Neuleiningen 1795: To France directly |
 Rochefort | Lordship 1494: County | n/a | n/a | 11th Century: First mentioned 1147: Extinct; to Walcourt-Rochefort 1418: To Mark-Arenberg by marriage 1454: To Mark-Rochefort 1544: To Stolberg-Königstein 1574: To Löwenstein-Wertheim 1611: To Löwenstein-Wertheim-Rochefort 1737: To the House of Stolberg (common territory) 1795: To France 1815: To the Netherlands 1830: To Belgium |
 Roggenburg | Abbacy | Swab | SP | 1126: Formed 1482-5: Imperial immediacy 1802: To Bavaria |
 Roggendorf | HRE Lordship HRE County | 1600: To Austria | ||
 Rosheim | Imperial City | Upp Rhen | RH | 1303: Free Imperial City 1648: Left the Empire; to France 1679: Independence revoked |
 Rostock | Principality | n/a | n/a | 1234: Partitioned from Mecklenburg 1300: Fief of Denmark 1312: City of Rostock seized by Mecklenburg 1314: Extinct; rest to Denmark 1323: To Mecklenburg |
 Rot an der Rot (Roth an der Roth; Mönchsrot; Münchenroth) | Abbacy | Swab | SP | 1126: Formed 1497: Imperial immediacy 1803: To Wartenberg-Roth 1806: To Württemberg |
 Rothenburg ob der Tauber | Imperial City | Franc | SW | 1274: Free Imperial City 1803: To Bavaria |
 Rothenfels | County | Swab | SC | 11th Century: First mentioned; to Buchhorn 1331: To Montfort-Tettnang 1354: To Montfort-Tettnang-Tettnang 1439: To Montfort-Tettnang-Rothenfels 1567: Sold to Königsegg-Aulendorf 1588: To Königsegg-Rothenfels 1804: Sold to Austria 1805: To Bavaria |
 Rötteln | Lordship | n/a | n/a | 1102: First mentioned; fief of Basel c. 1215: Partitioned into Rötteln-Rötteln and Rötteln-Rotenburg 1279: Reunited by Rötteln-Rötteln 1316: Extinct; to Baden-Hachberg-Sausenberg |
| Rötteln-Rotenburg | Lordship | n/a | n/a | c. 1215: Partitioned from Rötteln 1278: Bequeathed to Basel and St. Blaise's Abbey 1280: Extinct |
| Rötteln-Rötteln | Lordship | n/a | n/a | c. 1215: Partitioned from Rötteln 1279: Acquired Rotenburg; renamed to Rötteln |
 Rottenmünster | Abbacy | Swab | SP | 1224: Formed 1237: Imperial immediacy 1803: To Württemberg |
 Rottweil | Imperial City | Swab | SW | 1268: Free Imperial City 1463: Ally of the Swiss Confederation 1802: To Württemberg |
 Rügen | Principality | n/a | n/a | 1168: Rani made a fief of Denmark 1325: Extinct; to Pomerania-Wolgast (fief of Denmark until 1438) |
 Runkel | Lordship | n/a | n/a | 1159: First mentioned 1227: Partitioned into Runkel-Westerburg and Runkel-Runkel |
| Runkel-Runkel | Lordship | n/a | n/a | 1227: Partitioned from Runkel 1454: Inherited Wied, renamed to Wied-Runkel |
| Runkel-Westerburg | Lordship | n/a | n/a | 1227: Partitioned from Runkel 1467: inherited much of Leiningen-Dagsburg, renamed to Leiningen-Westerburg |
 Ruppin | County | Upp Sax | WE | c. 1214: To Gebhard of Arnstein, founder of the line Lindow-Ruppin 1349: Acquired Wusterhausen and Gransee 1407: Acquired Neustadt 1524: Extinct; to Brandenburg |
