Prior to 15th century
| History of Italy |
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 Italyportal |
- 225 BCE - A Roman army from Sardinia lands in Pisa. [1]
- 180 BCE - Pisa becomes a Roman colony. [1]
- 89 BCE - Pisans granted Roman citizenship. [2]
- 300 CE - Roman Catholic diocese of Pisa established (approximate date). [3]
- 805 CE - San Paolo a Ripa d'Arno monastery founded. [4]
- 812 CE - Pisa becomes part of the March of Tuscany (territory) of the Holy Roman Empire. [2]
- 990 - San Michele in Borgo monastery founded. [4]
- 1003 - Lucca-Pisa conflict occurs. [1]
- 1004 - Pisa sacked by Saracens. [1]
- 1063 - Pisa Cathedral construction begins. [2]
- 1011 - Pisa unsuccessfully attacked by Saracens again. [1]
- 1092
- Pisa Cathedral construction completed. [1]
- Roman Catholic Archdiocese of Pisa established. [3]
- 1095 - Pisans join religious First Crusade forces fighting abroad. [2]
- 1118 - Pisa Cathedral consecrated. [1]
- 1119 - San Pietro in Vinculis church reconsecrated. [4]
- 1132 - San Sisto church consecrated. [4]
- 1140 - Piazza dei Cavalieri, Pisa. the square become the center of Pisa.
- 1147–1150 - The Pisans joined in the Second Crusade. [1]
- 1150 - Santo Sepolcro church built (approximate date). [1]
- 1152 - Pisa Baptistery construction begins. [2]
- 1161 - Walls of Pisa built. [4]
- 1162 - Pisan territory expands. [4]
- 1167 - Flood.(it)
- 1173 - Tower of Pisa construction begins. [2]
- 1187 - Papal election, December 1187 held at Pisa.
- 1228 - Conflict with the united forces of Florence and Lucca near Barga
- 1230 - Santa Maria della Spina church and tower of the San Nicola church built (approximate date). [1]
- 1252 - Santa Caterina church built. [4]
- 1257 - Hospital built. [4]
- 1264 - San Francesco church built. [4]
- 1278 - Camposanto Monumentale (cemetery) built. [4]
- 1284 - Naval Battle of Meloria fought between Pisan and Genoese forces near Livorno; Genoese win.
- 1329 - Santa Maria del Carmine church built. [4]
- 1342 - Lucca annexed to Pisa. [2]
- 1343 - University of Pisa founded by edict of Pope Clement VI. [2]
- 1399 - Republic of Pisa becomes a client state of the Duchy of Milan.