| Kenny Rodeo | President | US | Republican | 1 |
| Jon Travis Rodermund | U.S. House | TX | Republican | 1 |
| Emory Rodgers | U.S. House | CA | Democratic | 1 |
| James Byron Rodgers | U.S. House | TX | Republican | 1 |
| Austin Rodill | U.S. House | PA | Democratic | 2 |
| Dan Rodimer | U.S. House | NV | Republican | 2 |
| Dan Rodimer | U.S. House | TX | Republican | 1 |
| Nancy Rodkin Rotering | U.S. House | IL | Democratic | 1 |
| Hamilton Soares Rodrigues | U.S. House | MA | Republican | 1 |
| Bettina Rodriguez-Aguilera | U.S. House | FL | Republican | 1 |
| Antonio Rodriguez | U.S. House | TX | Independent | 1 |
| Brenda Laney Rodriguez | U.S. Senate | NC | Independent | 1 |
| Christopher Rodriguez | U.S. House | CA | Republican | 1 |
| Darrell Allen Rodriguez | U.S. House | TX | Democratic | 1 |
| Eduardo R. Rodriguez | U.S. House | TX | Democratic | 1 |
| Jaime Alfonso Rodriguez | U.S. House | TX | Democratic | 1 |
| Jimmy Rodriguez | U.S. House | VT | Republican | 1 |
| Joanna Rodriguez | President | US | NNE | 1 |
| Jose Javier Rodriguez | U.S. House | FL | Democratic | 1 |
| Joshua Rodriguez | U.S. Senate | CO | UNK | 2 |
| Joshua Rodriguez | President | US | Libertarian | 1 |
| Joshua Rodriguez | U.S. Senate | AZ | W | 1 |
| Junius Rodriguez | U.S. House | IL | Democratic | 1 |
| Lucia S. Rodriguez | U.S. House | TX | Republican | 1 |
| Nancy Elizabeth Rodriguez | President | US | LBL | 1 |
| Paul M.F Rodriguez | U.S. Senate | NV | Republican | 1 |
| Heli Rodriguez-Prilliman | U.S. Senate | TX | Democratic | 1 |
| Ramon Rodriguez | U.S. House | NY | Democratic | 1 |
| Rolando D. Rodriguez | U.S. House | TX | Republican | 1 |
| Ruben Rodriguez | U.S. House | CT | Republican | 1 |
| Saul A. Rodriguez | U.S. House | AZ | Republican | 1 |
| Saul Alejandro Rodriguez | U.S. House | CA | Republican | 1 |
| Saul Alejandro Rodriguez | U.S. House | CA | Democratic | 1 |
| Tony Rodriguez | U.S. House | CA | Independent | 1 |
| Jo-Anna Rodriguez-Wheeler | U.S. House | NY | Democratic | 1 |
| Ydanis Rodriguez | U.S. House | NY | Democratic | 1 |
| Ann Roe | U.S. House | WI | Democratic | 1 |
| David Phillip Roe | U.S. House | TN | Republican | 1 |
| Zachary M. Roeill | U.S. House | NJ | Democratic | 1 |
| Nicholas Roesler | President | US | Independent | 1 |
| Angela Rogensues | U.S. House | MI | Democratic | 1 |
| Anthony Rogers | U.S. House | MO | Republican | 1 |
| Bevon Rogers | U.S. Senate | OK | Democratic | 1 |
| Curtis Ralph Rogers | U.S. House | FL | Republican | 1 |
| Evelyn L. Rogers | U.S. House | OK | Independent | 3 |
| Harold Dallas Rogers | U.S. House | KY | Republican | 1 |
| Lakesha Donyeil Rogers | U.S. House | TX | Independent | 1 |
| Mary C. Rogers | U.S. House | OH | Republican | 1 |
| Michael Rogers | U.S. House | AL | Republican | 2 |
| Michael Rogers | U.S. House | MD | Democratic | 1 |
| Michael J. Rogers | U.S. Senate | MI | Republican | 2 |
| Robert L. Rogers | U.S. House | AL | Republican | 1 |
| Tim Rogers | U.S. House | WI | Republican | 1 |
| Tim Rogers | U.S. House | WI | Republican | 1 |
| Wendy Rogers | U.S. House | AZ | Republican | 1 |
| Dana Rohrabacher | U.S. House | CA | Republican | 1 |
| Bradley Stephen Rohrs | U.S. House | MD | Republican | 1 |
| Iris Margarita Rojas | President | US | Independent | 1 |
| Ricardo Luis Rojas | U.S. House | NJ | Democratic | 1 |
| Theodore Edward Rokita | U.S. Senate | IN | Republican | 1 |
| David Rolde | President | US | Green | 1 |
| Lewis Warren Rolen | U.S. Senate | MO | Democratic | 1 |
| Robert Rollason | U.S. House | NC | Republican | 1 |
| Gavin Rollins | U.S. House | FL | Republican | 1 |
| Will Rollins | U.S. House | CA | Democratic | 1 |
| Chase Anderson Andy Romagnano | U.S. Senate | AL | Republican | 1 |
| Chase Anderson Andy Romagnano | U.S. House | FL | Republican | 3 |
| Chase Anderson Andy Reveren Romagnano | U.S. House | AL | Republican | 1 |
| Chase Anderson Romagnano | U.S. Senate | FL | Democratic | 1 |
| Angela Roman | U.S. House | OR | Republican | 1 |
| Elmer Luis Roman | U.S. House | PR | NPP | 1 |
| Andrew Romanoff | U.S. Senate | CO | Democratic | 2 |
| Damascus Romdcelly | U.S. House | FL | Republican | 1 |
| Paul J. Romero Jr. | U.S. House | OR | Republican | 1 |
| Paul Joseph Romero Jr. | U.S. Senate | OR | Republican | 1 |
| Ken Romley | U.S. House | NC | Democratic | 1 |
| Mitt /. Paul D. Ryan Romney | President | US | Republican | 1 |
| Willard Mitt Romney | U.S. Senate | UT | Republican | 1 |
| Samuel Ronan | U.S. Senate | OH | Independent | 1 |
| Mark Ronchetti V | U.S. Senate | NM | Republican | 1 |
| Steve Ronnebeck | U.S. House | AZ | Republican | 1 |
| Penny Ronning | U.S. House | MT | Democratic | 1 |
| Francis Rooney | U.S. House | FL | Republican | 1 |
| Tom Rooney | U.S. House | FL | Republican | 1 |
| Rodger Lee Roose | President | US | Democratic | 1 |
| Dustin Vaughn Rorex | President | US | Democratic | 1 |
| David A. Rosa | U.S. House | MA | Republican | 1 |
| Mike Rosales | U.S. House | NM | Independent | 1 |
| Mike Rosales | President | US | DTS | 1 |
| Raul Eduardo Rosas | U.S. House | MD | Democratic | 1 |
| Alexander Lyerrad Roschbach | President | US | Independent | 1 |
| Brett Allyn Rose | U.S. House | MN | OTH | 1 |
| Christopher Andrew Rose | U.S. Senate | WV | Republican | 1 |
| E. Brian Rose | U.S. House | MS | Republican | 1 |
| Jerry Rose | U.S. Senate | NM | UN | 1 |
| John Rose | U.S. Senate | CA | Democratic | 1 |
| John David Rose | U.S. Senate | CA | Democratic | 1 |
| John W. Rose | U.S. House | TN | Republican | 1 |
| Star Roselli | U.S. Senate | WY | Republican | 1 |
| Max Rose | U.S. House | NY | Democratic | 1 |
| Max Rose | U.S. House | NY | Democratic | 1 |
| Rob Rosenberger | U.S. House | TX | Republican | 1 |
| Mikhail Oliver Rosenberg | U.S. House | NY | Democratic | 1 |
| Matt Rosendale | U.S. Senate | MT | Republican | 1 |
| Matt Rosendale | U.S. House | MT | Republican | 1 |
| Martin Rosenfeld | U.S. Senate | PA | Republican | 1 |
| Kristen Rosen Gonzalez | U.S. House | FL | Democratic | 1 |
| Jacky Rosen | U.S. Senate | NV | Democratic | 4 |
| Jonathan Rosen | President | US | Republican | 1 |
| Laurel Roses | U.S. House | OR | Republican | 1 |
| Peter Rosewicz | U.S. House | OH | Democratic | 1 |
| Shawn Roshan | U.S. House | CA | Democratic | 1 |
| Peter Roskam | U.S. House | IL | Republican | 3 |
| Terre Layng Rosner | U.S. House | IL | Democratic | 1 |
| Daniel Craig Ross | U.S. House | NY | PPP | 1 |
| David Lewis Ross | U.S. House | VA | Republican | 1 |
| Deborah Ross | U.S. House | NC | Democratic | 1 |
| Deborah K. Ross | U.S. Senate | NC | Democratic | 1 |
| Dennis Ross | U.S. House | FL | Republican | 2 |
| Dennis Alan Ross | U.S. House | FL | Republican | 2 |
| Reid Rossell | U.S. House | MN | Democratic | 1 |
| Tremel Marquis Rosser | President | US | CMD | 1 |
| Gena Ross | U.S. Senate | MO | Democratic | 1 |
| Gena L. Ross | U.S. House | MO | Democratic | 1 |
| Aidan Patrick Rossi | U.S. House | NJ | ACE | 1 |
| Aidan Patrick Rossi | U.S. House | NJ | Democratic | 1 |
| Aidan Patrick Rossi | U.S. House | NJ | AIP | 1 |
| Aidan Patrick Rossi | U.S. House | NJ | Republican | 1 |
| Dino Rossi | U.S. House | WA | Republican | 1 |
| Jason Ross | U.S. House | TX | Republican | 1 |
| Ricky Allen Mister Ross Jr. | President | US | Independent | 1 |
| Thomas Ernest Ross Jr. | President | US | Independent | 1 |
| David Roth | U.S. House | ID | Democratic | 1 |
| David Jordan Roth | U.S. Senate | ID | Democratic | 1 |
| Franklin Delano Roth II | U.S. House | MO | Democratic | 1 |
| Keith Rothfus | U.S. House | PA | Republican | 3 |
| Michael Roth | U.S. House | NY | Republican | 1 |
| Eric Rothmuller | U.S. Senate | KY | Democratic | 1 |
| Otto Robert Rothmund | U.S. House | PA | Independent | 1 |
| Roger James Roth Jr. | U.S. House | WI | Republican | 1 |
| Elizabeth Samantha Rothschild | U.S. Senate | TX | Republican | 1 |
| Patrick Joseph Rottinghaus | U.S. House | KY | Democratic | 1 |
| George Rouco | U.S. House | NC | Republican | 1 |
| Harley E. Rouda Jr. | U.S. House | CA | Democratic | 1 |
| Mike Rounds | U.S. Senate | SD | Republican | 3 |
| Deborah Ann Rouse | President | US | W | 1 |
| Eric S. Rouse | U.S. House | NC | Republican | 1 |
| Root Routledge | U.S. House | CO | Democratic | 1 |
| David Cheston Rouzer | U.S. House | NC | Republican | 1 |
| Christopher Lee Rowe | U.S. House | TN | Democratic | 1 |
| Richard Allen Rowe Jr. | U.S. House | FL | Democratic | 1 |
| Kristen Alamo Rowin | U.S. House | TX | Republican | 1 |
| Roshin Rowjee | U.S. House | TX | Republican | 1 |
| Neil Rowland Vazquez | U.S. House | IL | Democratic | 1 |
| Todd Rowley | U.S. House | PA | Democratic | 1 |
| Tom Royals | U.S. House | MD | Republican | 1 |
| Lucille Roybal-Allard | U.S. House | CA | Democratic | 1 |
| Patricia Roybal Caballero | U.S. House | NM | Democratic | 1 |
| Chip Roy | U.S. House | TX | Republican | 1 |
| Jeffrey P. Rozler | U.S. Senate | NY | Republican | 1 |
| Costantino Rozzo | U.S. House | NJ | Democratic | 1 |
| Nick Rubando | U.S. House | OH | Democratic | 1 |
| David Alan Ruben | U.S. Senate | AZ | Democratic | 1 |
| Joel Martin Rubin | U.S. House | MD | Democratic | 1 |
| Zadok Rubin | U.S. House | NJ | PPY | 1 |
| Marco Rubio | U.S. Senate | FL | Republican | 3 |
| Marco Rubio | President | US | Republican | 1 |
| Susan Rubio | U.S. House | CA | Democratic | 1 |
| Daniel Ruby | U.S. House | OR | Democratic | 1 |
| Isaiah Patrick Rucker | U.S. House | WV | Independent | 1 |
| Thomas Rudbeck | U.S. House | IL | Independent | 1 |
| Shauna Rudd | U.S. House | KY | Democratic | 1 |
| Noran Eric Ruden | U.S. House | AZ | Republican | 1 |
| Joel Rudman | U.S. House | FL | Republican | 1 |
| Fredericka David Rudnick | President | US | Republican | 1 |
| Frederick David Rudnick | President | US | Republican | 1 |
| Frederick David Rudnick | President | US | Republican | 1 |
| Frederick D. Rudnick | U.S. House | CA | Democratic | 1 |
| Caleb Rudow | U.S. House | NC | Democratic | 1 |
| Andy Ruff | U.S. House | IN | Democratic | 1 |
| Jonathan Alan Ruff | U.S. House | SC | Republican | 1 |
| Kimberly Margaret Ruff | President | US | Libertarian | 1 |
| David Ben Ruiz | U.S. House | IN | Republican | 1 |
| David Ben Ruiz | U.S. House | IN | Republican | 2 |
| Michael Ruiz | U.S. House | MA | Democratic | 1 |
| Raul Ruiz | U.S. House | CA | Republican | 1 |
| Raul Ruiz | U.S. House | CA | Democratic | 2 |
| Juan F. Rullan | President | US | W | 1 |
| Michael Rulli | U.S. House | OH | Republican | 1 |
| Jeff Rumbaugh | U.S. Senate | WI | Democratic | 1 |
| Shawn Rundblade | U.S. House | WI | Democratic | 1 |
| Jon Runyan | U.S. House | NJ | Republican | 1 |
| Michael Jeffrey Ruoho | President | US | Republican | 1 |
| Mike Ruoho | U.S. Senate | MN | Republican | 1 |
| Charles Rupert V | U.S. House | GA | Republican | 1 |
| C. A. Dutch Ruppersberger | U.S. House | MD | Democratic | 1 |
| Bobby Lee Rush | U.S. House | IL | Democratic | 1 |
| Brian Rush | U.S. Senate | FL | Democratic | 1 |
| Brian Rush | U.S. Senate | FL | Democratic | 1 |
| Carolyn Rush | U.S. House | NJ | Democratic | 1 |