| Manuel Ignacio Casanova Dominguez | U.S. House | NY | Democratic | 1 |
| Jose Angel Casares | U.S. House | TX | Republican | 1 |
| Greg Casar | U.S. House | TX | Democratic | 1 |
| Mason Casas | U.S. House | TX | Democratic | 1 |
| Edward Case | U.S. House | HI | Democratic | 1 |
| Jim Case | U.S. House | IN | Republican | 1 |
| Mike Casey | U.S. House | MN | Republican | 1 |
| Robert P. Casey Jr. | U.S. Senate | PA | Democratic | 3 |
| Sandy for Casey | U.S. House | TN | Republican | 1 |
| Stephen M. Casey | U.S. House | RI | Democratic | 1 |
| Courtney E. Casgraux (Moore) | U.S. House | OR | Democratic | 1 |
| Lawrence A. Casha | U.S. House | NJ | Republican | 1 |
| David McCullough Cash | President | US | Democratic | 1 |
| Erika Marie Cashin | U.S. House | MN | Republican | 1 |
| John Daryl Cash | President | US | Independent | 1 |
| Tambrei Cash | U.S. House | GA | Democratic | 1 |
| Brandon 8013368524 Casper | U.S. House | UT | Republican | 1 |
| Tom Casperson | U.S. House | MI | Republican | 1 |
| Samuel Cassiba | President | US | Democratic | 1 |
| William M. Cassidy | U.S. Senate | LA | Republican | 3 |
| Jeanette Cass | U.S. House | MO | MO | 1 |
| Thomas Sick of D.C Casson | U.S. House | AL | Independent | 1 |
| Richard Michael Castaldo | U.S. House | OK | Libertarian | 2 |
| Richie Castaldo | U.S. House | OK | Libertarian | 1 |
| Julio Castaneda | U.S. House | CA | NNE | 1 |
| Clifford Vance Cast | U.S. House | AZ | Libertarian | 1 |
| Mike Castellanos | U.S. House | CA | Democratic | 1 |
| Matt Castelli | U.S. House | NY | Democratic | 1 |
| Robert Christian Castelli | U.S. House | NC | Republican | 1 |
| Sean Casten | U.S. House | IL | Democratic | 1 |
| David B. Castillo | U.S. House | WA | Republican | 1 |
| Hector L. Castillo | U.S. House | NJ | Republican | 1 |
| Hector L. Castillo | U.S. House | NJ | Republican | 1 |
| Jose Alfredo Castillo | U.S. House | FL | Republican | 1 |
| Lee Castillo | U.S. House | UT | Democratic | 1 |
| Terri Castleberry | U.S. House | GA | Independent | 1 |
| Jaime Castle | U.S. House | OH | Democratic | 1 |
| Charles Edward Caston | President | US | Independent | 1 |
| John Castorani | U.S. House | AL | Republican | 1 |
| John Castorani | U.S. House | VA | Republican | 1 |
| Kathy Castor | U.S. House | FL | Democratic | 1 |
| Dan Castricone | U.S. House | NY | Republican | 1 |
| Joaquin Castro | U.S. House | TX | Democratic | 1 |
| John Anthony Castro | U.S. Senate | TX | Republican | 1 |
| John Anthony Castro | President | US | Republican | 1 |
| JuliáN Castro | President | US | Democratic | 1 |
| Cara Castronuova | U.S. Senate | NY | Republican | 1 |
| William Mendiola Castro | U.S. House | GU | Republican | 1 |
| Brandon Casutt | U.S. House | NV | Democratic | 1 |
| Carl B. Caswell | President | US | NNE | 1 |
| Ryan Joshua Catala | U.S. House | TX | Republican | 1 |
| Ryan Joshua Catala | U.S. House | TX | Republican | 1 |
| Paul Catanese | President | US | Independent | 1 |
| Anthony Catella | U.S. House | IL | Republican | 1 |
| Corbin Zane Cater | U.S. House | TX | Independent | 1 |
| Corbin Zane Cater | U.S. House | TX | Independent | 1 |
| Christopher U. MD Cates | U.S. House | GA | Republican | 1 |
| Prato Catherine | U.S. House | NV | Republican | 1 |
| Nicholas Joseph Catucci | U.S. House | NJ | Republican | 1 |
| Chad Causey | U.S. House | AR | Democratic | 1 |
| Joseph Cavagna | U.S. House | FL | Republican | 1 |
| Vincent Cavaleri | U.S. House | WA | Republican | 1 |
| Crystal Ann Cavalier | U.S. House | NC | Democratic | 1 |
| Eric Scott Cavanagh | President | US | Republican | 1 |
| Kevin Cavanaugh | U.S. House | AZ | Republican | 1 |
| Dean Cavaretta | U.S. House | PA | Republican | 1 |
| Campbell Cavasso | U.S. House | HI | Republican | 1 |
| Jose Aizar Cavazos | U.S. House | TX | Republican | 1 |
| David F. Cavell | U.S. House | MA | Democratic | 1 |
| Mark Cavener | U.S. Senate | AZ | Republican | 1 |
| Mark Cavener | U.S. House | OR | Republican | 1 |
| David Madison Cawthorn | U.S. House | NC | Republican | 1 |
| Alberto A1 Cedeno | President | US | W | 3 |
| Anthony Patrick Celata | U.S. House | MA | NPA | 1 |
| Steffane Marie Celia Rodriguez | President | US | W | 1 |
| Marc Christian Cenedella | U.S. House | NY | Republican | 1 |
| Brent W. Centers | U.S. House | OH | Republican | 1 |
| Lana Centonze | U.S. House | TX | Republican | 1 |
| Janille Centunzi | President | US | Independent | 1 |
| Ingrid Centurion | U.S. House | SC | Republican | 1 |
| Gary Ceres | U.S. House | NC | Republican | 1 |
| Jesse Cerrotti | U.S. House | NY | Democratic | 1 |
| Paul R. Chabot | U.S. House | CA | Republican | 1 |
| Steve Chabot | U.S. House | OH | Republican | 1 |
| Lincoln Davenport Chafee | President | US | Libertarian | 1 |
| Christopher Chaffee | U.S. Senate | MD | Republican | 1 |
| Amy Fogelstrom Chai | U.S. House | CT | Libertarian | 1 |
| Justin Raphael Chaires | U.S. House | NY | Democratic | 1 |
| Thomas E. Colonel Chalifoux Jr. | U.S. House | FL | Republican | 1 |
| Christopher William Chamberlin | U.S. House | MN | Republican | 1 |
| Ryan Chamberlin | U.S. House | FL | Republican | 1 |
| Chris Chambers | U.S. House | FL | Republican | 1 |
| Gary Chambers Jr. | U.S. House | LA | Democratic | 1 |
| Gary Chambers Jr. | U.S. Senate | LA | Democratic | 1 |
| C. Saxby Chambliss | U.S. Senate | GA | Republican | 1 |
| Wendell Champion | U.S. House | TX | Republican | 1 |
| A.B Chandler III | U.S. House | KY | Democratic | 1 |
| Alexandra Eleanor Chandler | U.S. House | MA | Democratic | 1 |
| Christine Weston Chandler | President | US | UST | 1 |
| Matthew Walter Chandler | President | US | JCN | 1 |
| Roshan Chandrakumar | U.S. House | OH | Democratic | 1 |
| Jonathan Chane | U.S. House | FL | Democratic | 1 |
| Roger Chaney Jr. | President | US | Democratic | 1 |
| Mark Chang | U.S. House | MD | Democratic | 1 |
| Sea Chan | U.S. House | WA | Republican | 1 |
| Miguel Chapa | U.S. House | CA | Republican | 1 |
| Suneetha Chaparala | U.S. House | TX | Republican | 1 |
| Dan Chapin | U.S. House | CO | UN | 1 |
| Dan R. Chapin | U.S. House | CO | UN | 1 |
| Christoph La'Flare Chapman | U.S. Senate | GA | Republican | 1 |
| John Chapman | U.S. House | SC | Republican | 1 |
| John C. Chapman | U.S. House | MA | Republican | 2 |
| Patrick Michael Chapman II | President | US | W | 1 |
| Robert Chapman | President | US | W | 1 |
| Maria Chappelle-Nadal | U.S. House | MO | Democratic | 1 |
| Matthew Louis Chappell | U.S. House | VA | Republican | 2 |
| Jack Lewis Charbonneau | President | US | Independent | 1 |
| Celina May Charles | President | US | IDP | 1 |
| Mark R. Charles | President | US | Independent | 1 |
| Derek Chartrand | U.S. House | WA | Republican | 1 |
| Christine Charyton | President | US | — | 1 |
| Amanda Freeman Chase | U.S. House | VA | Republican | 1 |
| Claire Chase | U.S. House | NM | Republican | 1 |
| Oliver Chase | U.S. Senate | GA | Libertarian | 1 |
| Robert Chase | U.S. House | WA | Republican | 1 |
| Todd Chase | U.S. House | FL | Republican | 1 |
| Christopher Neil Chastain | U.S. House | SC | Democratic | 1 |
| Robert Chatlos | U.S. House | IN | Democratic | 1 |
| Jamil O. Chaudhry-Ahmad | U.S. House | OR | Democratic | 1 |
| Melissa Chaudhry | U.S. House | WA | Democratic | 1 |
| Raja Chaudhry | U.S. House | TX | Democratic | 1 |
| Shelly Wilson Chauncey | U.S. House | PA | Democratic | 1 |
| Lori Chavez-Deremer | U.S. House | OR | Republican | 2 |
| Emilio Chavez Jr. | President | US | Independent | 1 |
| Jonathan Chavez | U.S. House | GA | Republican | 2 |
| Michaela Chavez | U.S. House | NM | Republican | 1 |
| Norma Priscilla Chavez | U.S. House | TX | Democratic | 1 |
| Ramie Nicole Chavez | President | US | Republican | 1 |
| Rick (Nmi) Chavez | President | US | Democratic | 1 |
| Robert Cheader | President | US | Republican | 1 |
| Jamie Cheek | U.S. House | UT | Democratic | 1 |
| John C. Cheeks | U.S. House | DC | Independent | 1 |
| Jerry Cheevers | U.S. House | IA | Republican | 1 |
| Iymen Chehade | U.S. House | IL | Democratic | 1 |
| Anita S. Chen | U.S. House | CA | Republican | 1 |
| Carole Cheney | U.S. House | IL | Democratic | 1 |
| Elizabeth Cheney | U.S. House | WY | Republican | 1 |
| Jamie Cheney | U.S. House | NY | Democratic | 1 |
| Austin Franklin Cheng | U.S. House | NY | Democratic | 1 |
| Jay Chen | U.S. House | CA | Democratic | 1 |
| Nolan Chen | U.S. House | CA | Republican | 1 |
| Steve Chentnik | U.S. House | MO | Republican | 1 |
| Angad Singh Chera | President | US | Democratic | 1 |
| Sheila Cherfilus-McCormick | U.S. House | FL | Democratic | 1 |
| Andrei Cherny | U.S. House | AZ | Democratic | 1 |
| Andrei Cherny | U.S. House | AZ | Democratic | 1 |
| Liza Dawn Cherricks | President | US | Independent | 1 |
| Jason Seth Cherry | U.S. Senate | ME | Independent | 1 |
| Jacques Chery | U.S. House | MO | Democratic | 1 |
| Patricia Chesbro | U.S. Senate | AK | Democratic | 1 |
| Steven Chess | U.S. House | FL | Republican | 1 |
| Steven Chess | U.S. House | FL | Republican | 1 |
| Albert Chester II | U.S. House | FL | Democratic | 4 |
| Keli Chevalier | U.S. House | TX | Republican | 1 |
| Cameron Alton Chick Sr. | U.S. House | NM | Independent | 2 |
| Cameron Alton Chick Sr. | U.S. House | NM | Independent | 1 |
| Cameron Alton Chick Sr. | U.S. House | NM | Independent | 1 |
| Cameron Alton Chick Sr. | U.S. Senate | NM | Independent | 1 |
| Cameron Chick | U.S. Senate | NM | Independent | 1 |
| Cameron Chick Sr. | U.S. House | NM | Independent | 1 |
| David Chiddick | U.S. House | CA | Republican | 1 |
| Earl Childress | U.S. House | MO | Democratic | 1 |
| Vivian Louise Childs | U.S. House | GA | Republican | 1 |
| Harpreet Singh Chima | U.S. House | CA | Democratic | 1 |
| Doug Chin | U.S. House | HI | Democratic | 1 |
| Eric J. Ching | U.S. House | CA | Republican | 1 |
| Balaraju Raju Chinthala | U.S. House | IN | Republican | 1 |
| Damien Garrett Chiodo | President | US | Democratic | 1 |
| Angie Chirino | U.S. House | FL | Republican | 1 |
| Christine Maria Chisholm | President | US | Independent | 1 |
| Christine Maria Chisholm | President | US | Independent | 1 |
| Casey Chlebek | U.S. Senate | IL | Republican | 2 |
| Casey Chlebek | U.S. Senate | IL | Republican | 1 |
| Peter Charles Choharis | U.S. House | MD | Democratic | 1 |
| Sandra Choi | U.S. House | NY | Democratic | 1 |
| Kirk Chong | U.S. House | FL | Republican | 1 |
| Roy Cho | U.S. House | NJ | Democratic | 1 |
| Mizanur Choudhury | U.S. House | NY | Democratic | 1 |
| Joseph Chou | U.S. House | NY | Republican | 1 |
| Mohammed Mohiuddin Chowdhury | U.S. House | NY | Independent | 1 |
| Shaniyat Chowdhury | U.S. House | NY | Democratic | 1 |
| Derek Chowen | President | US | Independent | 1 |
| John R. Chrin | U.S. House | PA | Republican | 1 |
| Adam J. Christensen | U.S. House | FL | Democratic | 1 |
| Chris Christensen | U.S. Senate | OR | Republican | 1 |
| Chris C. Christensen | U.S. House | OR | Republican | 1 |
| Trent Christensen | U.S. House | UT | Republican | 1 |
| David Andrew Christenson | President | US | NNE | 1 |
| David Andrew Christenson | President | US | UN | 1 |
| David Andrew Christenson | President | US | UN | 1 |