| Representative | Country/place of birth | Citizenship by | Party | Position(s) held |
|---|
| John J. Adams |  Canada | Unknown | Democratic | U.S. Representative from New York |
| Victor Anfuso |  Italy | Unknown | Democratic | U.S. Representative from New York |
| Henry M. Arens |  Germany | Derivation | Farmer-Labor | U.S. Representative from Minnesota; previously Minnesota State Senator and Minnesota State Representative; later Lieutenant Governor of Minnesota |
| William Armstrong |  Ireland | Unknown | Democratic-Republican | U.S. Representative from Virginia; previously Virginia Delegate |
| Chester G. Atkins |  Switzerland | Birth | Democratic | U.S. Representative from Massachusetts; previously Massachusetts State Senator and Massachusetts State Representative |
| Robert Baker |  United Kingdom | Unknown | Democratic | U.S. Representative from New York |
| Ron Barber | United Kingdom | Birth | Democratic | U.S. Representative from Arizona |
| Samuel Fleming Barr | Ireland | Unknown | Republican | U.S. Representative from Pennsylvania |
| William Bernard Barry |  Ireland | Unknown | Democratic | U.S. Representative from New York |
| Richard Bartholdt |  Germany | Unknown | Republican | U.S. Representative from Missouri |
| Charles Barwig | Germany | Unknown | Democratic | U.S. Representative from Wisconsin |
| William Beatty | Ireland | Unknown | Democratic | U.S. Representative from Pennsylvania |
| Carlos Bee |  Mexico | Birth | Democratic | U.S. Representative from Texas, previously Texas State Senator |
| Andrew Beirne | Ireland | Unknown | Jeffersonian Republican | U.S. Representative from Virginia, previously Virginia Delegate and Virginia State Senator |
| Victor L. Berger |  Austria | Naturalization | Socialist | U.S. Representative from Wisconsin |
| John Bernard |  France | Derivation | Farmer-Labor | U.S. Representative from Minnesota |
| Charles Gustav Binderup |  Denmark | Unknown | Democratic | U.S. Representative from Nebraska |
| Haldor Boen |  Norway | Derivation | Populist | U.S. Representative from Minnesota |
| Azariah Boody | Canada | Unknown | Whig | U.S. Representative from New York |
| Thomas W. Bradley |  England | Unknown | Republican | U.S. Representative from New York |
| Edward Breitung | Germany | Unknown | Republican | U.S. Representative from Michigan |
| Robert G. Bremner |  Scotland | Unknown | Democratic | U.S. Representative from New Jersey |
| George H. Brickner | Germany | Unknown | Democratic | U.S. Representative from Wisconsin |
| James Frankland Briggs | Germany | Unknown | Republican | U.S. Representative from New Hampshire |
| Henry Bristow |  Azores | Unknown | Republican | U.S. Representative from New York |
| John W. Brown | United Kingdom | Derivation | Jacksonian | U.S. Representative from New York; later Associate Justice of the New York Supreme Court |
| Hugh Buchanan | Scotland | Unknown | Democratic | U.S. Representative from Georgia |
| Charles F. Buck | Germany | Unknown | Democratic | U.S. Representative from Louisiana |
| Samuel Swinfin Burdett | England | Unknown | Republican | U.S. Representative from Missouri |
| Henry Burk | Germany | Unknown | Republican | U.S. Representative from Pennsylvania |
| Aedanus Burke | Ireland | Derivation | Anti-Administration | U.S. Representative from South Carolina; previously South Carolina State Representative; later Chief Justice of the South Carolina Supreme Court |
| William J. Burke | England | Unknown | Republican | U.S. Representative from Pennsylvania |
| George Burnham | England | Unknown | Republican | U.S. Representative from California |
| Thomas Burnside | Ireland | Derivation | Democratic-Republican | U.S. Representative from Pennsylvania; previously Pennsylvania State Senator |
| Joseph Henry Burrows | United Kingdom | Derivation | Greenback | U.S. Representative from Missouri |
| Sala Burton |  Poland | Unknown | Democratic | U.S. Representative from California |
| Thompson Campbell | Ireland | Unknown | Democratic | U.S. Representative from Illinois |
| Timothy J. Campbell | Ireland | Unknown | Democratic | U.S. Representative from New York |
| Joseph Cao |  South Vietnam | Naturalization | Republican | U.S. Representative from Louisiana |
| Louis Capozzoli | Italy | Unknown | Democratic | U.S. Representative from New York |
| Patrick J. Carley | Ireland | Unknown | Democratic | U.S. Representative from New York |
| Peter Angelo Cavicchia | Italy | Unknown | Republican | U.S. Representative from New Jersey |
| William B. Charles | Scotland | Unknown | Republican | U.S. Representative from New York |
| John Michael Clancy | Ireland | Unknown | Democratic | U.S. Representative from New York; previously New York State Assemblyman |
| William Bourke Cockran | Ireland | Naturalization | Democratic | U.S. Representative from New York |
| James Cooney | Ireland | Naturalization | Democratic | U.S. Representative from Missouri |
| Patrick Collins | Ireland | Derivation | Democratic | U.S. Representative from Massachusetts; later Mayor of Boston |
| James Cooney | Ireland | Unknown | Democratic | U.S. Representative from Missouri |
| John G. Cooper | England | Naturalization | Republican | U.S. Representative from Ohio |
| Hector Craig | Scotland | Unknown | Jacksonian | U.S. Representative from New York |
| William Crawford | United Kingdom | Naturalization | Democratic-Republican | U.S. Representative from Pennsylvania |
| Thomas J. Creamer | Ireland | Unknown | Democratic | U.S. Representative from New York |
| Charles Frederick Crisp | England | Unknown | Democratic | U.S. Representative from Georgia |
| Robert Crosser | Scotland | Unknown | Democratic | U.S. Representative from Ohio |
| Frank Crowther | England | Unknown | Republican | U.S. Representative from New York |
| George Calhoun Crowther | England | Unknown | Republican | U.S. Representative from Missouri |
| William Cullen | Ireland | Unknown | Republican | U.S. Representative from Illinois |
| Thomas Cusack | Ireland | Unknown | Democratic | U.S. Representative from Illinois |
| Geoff Davis |  Canada | Birth | Republican | U.S. Representative from Kentucky |
| Robert T. Davis | Ireland | Unknown | Republican | U.S. Representative from Massachusetts; previously Mayor of Fall River, Massachusetts |
| Benjamin Dean | United Kingdom | Derivation | Democratic | U.S. Representative from Massachusetts; previously Massachusetts State Senator |
| Steven Derounian |  Bulgaria | Unknown | Republican | U.S. Representative from New York; later Associate Justice of the New York Supreme Court |
| Lincoln Díaz-Balart |  Cuba | Naturalization | Republican | U.S. Representative from Florida; previously Florida State Senator and Florida State Representative |
| Samuel Dickstein |  Russia | Unknown | Democratic | U.S. Representative from New York; previously New York State Assemblyman; later Associate Justice of the New York State Supreme Court |
| Michael Donohoe | Ireland | Derivation | Democratic | U.S. Representative from Pennsylvania |
| Mervyn Dymally |  Trinidad and Tobago | Derivation | Democratic | U.S. Representative from California; previously Lieutenant Governor of California and California State Senator; later California State Assemblyman |
| Charles Aubrey Eaton | Canada | Unknown | Republican | U.S. Representative from New Jersey |
| John Ewing | Ireland | Derivation | National Republican,
then Whig | U.S. Representative from Indiana |
| Jacob Falconer |  Canada | Derivation | Progressive | U.S. Representative from Washington; previously Washington State Senator and Washington State Representative |
| Michael F. Farley | Ireland | Derivation | Democratic | U.S. Representative from New York |
| John F. Finerty | Ireland | Derivation | Independent Democratic | U.S. Representative from Illinois |
| Gustavus A. Finkelnburg |  Prussia | Derivation | Republican, then
Liberal Republican | U.S. Representative from Missouri; later Judge of the United States District Court for the Eastern District of Missouri |
| Mayra Flores |  Mexico | Naturalization | Republican | U.S. Representative from Texas |
| Nicholas Ford | Ireland | Derivation | Greenback | U.S. Representative from Missouri; previously Missouri State Representative |
| Elizabeth Furse |  Kenya | Derivation | Democratic | U.S. Representative from Oregon |
| Bernard J. Gehrmann | Germany | Derivation | Progressive | U.S. Representative from Wisconsin; previously Wisconsin State Assemblyman; later Wisconsin State Senator |
| Sam Gejdenson | Germany | Unknown | Democratic | U.S. Representative from Connecticut |
| George W. Gillie | Scotland | Unknown | Republican | U.S. Representative from Indiana |
| Martin Gorski | Poland | Unknown | Democratic | U.S. Representative from Illinois |
| James McMahon Graham | Ireland | Derivation | Democratic | U.S. Representative from Illinois; previously Illinois State Representative |
| Ernest Greenwood | United Kingdom | Unknown | Democratic | U.S. Representative from New York |
| John Greig | United Kingdom | Naturalization | Whig | U.S. Representative from New York |
| James Gunn | Ireland | Derivation | Populist | U.S. Representative from Idaho; previously Idaho State Senator |
| Michael Hahn |  Bavaria | Derivation | Republican,
then Unionist | U.S. Representative from Louisiana; previously Louisiana State Representative; later Governor of Louisiana |
| Kittel Halvorson | Norway | Derivation | Populist | U.S. Representative from Minnesota; previously Minnesota State Representative |
| Alexander M. Hardy | Canada | Unknown | Republican | U.S. Representative from Indiana |
| John Hardy | United Kingdom | Unknown | Democratic | U.S. Representative from New York; previously New York City Alderman and New York State Assemblyman |
| Alexander Harper | Ireland | Naturalization | Whig | U.S. Representative from Ohio; previously Ohio State Representative |
| Richard A. Harrison | United Kingdom | Derivation | Unionist | U.S. Representative from Ohio; previously Ohio State Senator and Ohio State Representative |
| Nils P. Haugen | Norway | Unknown | Republican | U.S. Representative from Wisconsin; previously Wisconsin State Assemblyman |
| William Heilman | Germany | Unknown | Republican | U.S. Representative from Indiana |
| Samuel Henderson | United Kingdom | Naturalization | Federalist | U.S. Representative from Pennsylvania |
| Pete Hoekstra |  Netherlands | Derivation | Republican | U.S. Representative from Michigan; later United States Ambassador to the Netherlands |
| William Hogan | United Kingdom | Derivation | Jacksonian | U.S. Representative from New York |
| Einar Hoidale | Norway | Naturalization | Democratic | U.S. Representative from Minnesota |
| Pehr G. Holmes |  Sweden | Unknown | Republican | U.S. Representative from Massachusetts; previously Massachusetts Executive Councilor and Mayor of Worcester, Massachusetts |
| Denis M. Hurley | Ireland | Derivation | Republican | U.S. Representative from New York |
| Jacob Johnson | Denmark | Unknown | Republican | U.S. Representative from Utah |
| John Johnson | Ireland | Derivation | Independent Democratic | U.S. Representative from Ohio |
| Niels Juul | Denmark | Derivation | Republican | U.S. Representative from Illinois |
| Ruben Kihuen | Mexico | Naturalization | Democratic | U.S. Representative from Nevada; previously Nevada State Senator and Nevada State Assemblyman |
| Jay Kim |  Japanese Korea | Naturalization | Republican | U.S. Representative from California; previously Mayor of Diamond Bar, California |
| Harold Knutson | Norway | Naturalization | Republican | U.S. Representative from Minnesota (House Majority Whip) |
| Ernie Konnyu |  Hungary | Derivation | Republican | U.S. Representative from California; previously California State Assemblyman |
| John Hans Krebs |  Germany | Derivation | Democratic | U.S. Representative from California |
| Otto Krueger |  Russia | Unknown | Republican | U.S. Representative from North Dakota |
| Tom Lantos | Hungary | Birth | Democratic | U.S. Representative from California |
| Charles Lieb | Germany | Unknown | Democratic | U.S. Representative from Indiana |
| John Lind | Sweden | Birth | Democratic | U.S. Representative from Minnesota; later Governor of Minnesota |
| Charles August Lindbergh | Sweden | Naturalization | Republican | U.S. Representative from Minnesota |
| Meyer London |  Russian Poland | Naturalization | Socialist | U.S. Representative from New York |
| Robert Lowry | Ireland | Unknown | Democratic | U.S. Representative from Indiana |
| John Baptiste Charles Lucas |  France | Naturalization | Democratic-Republican | U.S. Representative from Pennsylvania |
| Thaddeus M. Machrowicz |  Prussia | Unknown | Democratic | U.S. Representative from Michigan |
| John C. Mackie | Canada | Unknown | Democratic | U.S. Representative from Michigan |
| Tom Malinowski | Poland | Unknown | Democratic | U.S. Representative from New Jersey |
| Sean Patrick Maloney | Canada | Birth | Democratic | White House Staff Secretary under Bill Clinton, and U.S. Representative from New York |
| Noah M. Mason |  Wales | Unknown | Republican | U.S. Representative from Illinois |
| Alfred Milnes | England | Unknown | Republican | U.S. Representative from Michigan |
| Blair McClenachan | Ireland | Derivation | Democratic-Republican | U.S. Representative from Pennsylvania; previously Pennsylvania State Representative |
| William McCreery | Ireland | Naturalization | Democratic-Republican | U.S. Representative from Maryland; later Maryland State Senator |
| Donald McEachin | Germany | Unknown | Democratic | U.S. Representative from Virginia |
| Lawrence E. McGann | Ireland | Unknown | Democratic | U.S. Representative from Illinois |
| John J. McGrath | Ireland | Naturalization | Democratic | U.S. Representative from California |
| James McLachlan | Scotland | Unknown | Republican | U.S. Representative from California |
| Joseph McLaughlin | Ireland | Derivation | Republican | U.S. Representative from Pennsylvania |
| Frank Joseph McNulty | Ireland | Unknown | Democratic | U.S. Representative from New Jersey |
| M. Alfred Michaelson | Norway | Unknown | Republican | U.S. Representative from Illinois; previously Chicago City Councilman |
| William Milnes Jr. | United Kingdom | Derivation | Conservative | U.S. Representative from Virginia; previously Virginia Delegate |
| Leopold Morse | Bavaria | Unknown | Democratic | U.S. Representative from Massachusetts |
| William Moxley | Ireland | Unknown | Republican | U.S. Representative from Illinois |
| Debbie Mucarsel-Powell |  Ecuador | Naturalization | Democratic | U.S. Representative from Florida |
| Stephanie Murphy |  Vietnam | Naturalization | Democratic | U.S. Representative from Florida |
| Michael N. Nolan | Ireland | Naturalization | Democratic | U.S. Representative, Mayor of Albany, New York |
| James O'Brien | Ireland | Unknown | Independent Democratic | U.S. Representative from New York; previously New York State Senator and Sheriff of New York County |
| Daniel O'Reilly | Ireland | Naturalization | Independent Democratic | U.S. Representative from New York; previously Mayor of Brooklyn, New York |
| George F. O'Shaunessy | Ireland | Unknown | Democratic | U.S. Representative from Rhode Island |
| Robert Dale Owen | Scotland | Unknown | Democratic | U.S. Representative from Indiana |
| Romualdo Pacheco | Mexico | Unknown | Republican | U.S. Representative from California; previously Governor of California |
| William Prince | Ireland | Unknown | Democratic-Republican | U.S. Representative from Indiana |
| Joseph Pulitzer | Hungary | Unknown | Democratic | U.S. Representative from New York; previously Missouri State Representative |
| John Quinn | Ireland | Naturalization | Democratic | U.S. Representative from New York; previously New York State Assemblyman |
| Robert L. Ramsay | England | Unknown | Democratic | U.S. Representative from West Virginia |
| John Richards |  United Kingdom | Naturalization | Democratic-Republican | U.S. Representative from New York; previously New York State Assemblyman |
| Ciro Rodriguez |  Mexico | Unknown | Democratic | U.S. Representative from Texas; previously Texas State Representative |
| Ileana Ros-Lehtinen | Cuba | Derivation | Republican | U.S. Representative from Florida; previously Florida State Senator and Florida State Representative |
| William Russell | Ireland | Naturalization | Jacksonian, then Whig | U.S. Representative from Ohio; previously Ohio State Senator and Ohio State Representative |
| Robert Rutherford | United Kingdom | Derivation | Anti-Administration, then
Democratic-Republican | U.S. Representative from Virginia; previously Virginia State Senator |
| Adolph J. Sabath |  Kingdom of Bohemia | Unknown | Democratic | U.S. Representative from Illinois |
| Peter Sailly | France | Naturalization | Democratic-Republican | U.S. Representative from New York; previously New York State Assemblyman |
| Dalip Singh Saund |  British India | Naturalization | Democratic | U.S. Representative from California |
| James Shields | Ireland | Naturalization | Jacksonian | U.S. Representative from Ohio; previously Ohio State Representative |
| Jerry Simpson | Prince Edward Island | Derivation | Populist | U.S. Representative from Kansas |
| Albio Sires | Cuba | Derivation | Democratic | U.S. Representative from New Jersey; previously Mayor of West New York, New Jersey |
| Charles Slade | United Kingdom | Derivation | Jacksonian | U.S. Representative from Illinois; previously Illinois State Representative |
| Alexander Smyth | Ireland | Derivation | Democratic-Republican | U.S. Representative from Virginia; previously Virginia Delegate |
| Michelle Steel |  South Korea | Naturalization | Republican | U.S. Representative from California |
| Karl Stefan |  Austria-Hungary | Derivation | Republican | U.S. Representative from Nebraska |
| Isidor Straus | Bavaria | Unknown | Democratic | U.S. Representative from New York |
| Arthur H. Taylor | Canada | Unknown | Democratic | U.S. Representative from Indiana |
| John K. Tener | Ireland | Unknown | Republican | U.S. Representative from Pennsylvania; later Governor of Pennsylvania |
| John Thomson | Ireland | Derivation | Jacksonian | U.S. Representative from Ohio; previously Ohio State Senator and Ohio State Representative |
| Herman Toll |  Russian Empire | Unknown | Democratic | U.S. Representative from Pennsylvania |
| Charles W. Upham | Canada | Unknown | Whig | U.S. Representative from Massachusetts; previously Mayor of Salem, Massachusetts and Massachusetts State Representative and Massachusetts State Senator |
| Weston E. Vivian | Canada | Unknown | Democratic | U.S. Representative from Michigan |
| Benjamin Walker | United Kingdom | N/A | Federalist | U.S. Representative from New York |
| Michael Walsh | Ireland | Derivation | Democratic | U.S. Representative from New York; previously New York State Assemblyman |
| Knud Wefald | Norway | Naturalization | Farmer-Labor | U.S. Representative from Minnesota; previously Minnesota State Representative |
| Theodore S. Weiss | Hungary | Derivation | Democratic | U.S. Representative from New York; previously New York City Councilman |
| Campbell P. White | Ireland | Naturalization | Jacksonian | U.S. Representative from New York |
| James Bain White | Scotland | Unknown | Republican | U.S. Representative from Indiana |
| Susan Wild | West Germany | Birth | Democratic | U.S. Representative from Pennsylvania |
| James Wilson | United Kingdom | Naturalization | Republican | U.S. Representative from Iowa; later Secretary of Agriculture |
| William Bauchop Wilson | United Kingdom | Naturalization | Democratic | U.S. Representative from Pennsylvania; later Secretary of Labor |
| John Travers Wood | England | Unknown | Republican | U.S. Representative from Idaho |
| Chase G. Woodhouse | Canada | Birth | Democratic | U.S. Representative from Connecticut; previously Secretary of the State of Connecticut |
| Charles W. Woodman | Denmark | Derivation | Republican | U.S. Representative from Illinois |
| David Wu |  Taiwan | Unknown | Democratic | U.S. Representative from Oregon |
