| James Joseph Christiana III | U.S. Senate | PA | Republican | 1 |
| David Christian | U.S. Senate | PA | Republican | 1 |
| Jerrad Shane Christian | U.S. House | OH | Democratic | 1 |
| Robert Franklin Christian III | U.S. House | GA | Democratic | 1 |
| Katrina Christiansen | U.S. Senate | ND | Democratic | 2 |
| Wallyn Christian | U.S. Senate | HI | Republican | 1 |
| Chris Christie | President | US | Republican | 1 |
| Jennifer Christie | U.S. House | IN | Democratic | 1 |
| Jesus Christ | President | US | Independent | 1 |
| Joseph William Christman | U.S. House | OR | Libertarian | 1 |
| Daniel John Christmann | President | US | Libertarian | 1 |
| Peter Christofides | U.S. House | NY | Republican | 1 |
| Warren Christopher | U.S. House | MD | Democratic | 1 |
| Sandra Christophe | U.S. House | LA | Democratic | 1 |
| Shawn Michael Chrystal | President | US | VET | 1 |
| Jon Chuba | U.S. House | FL | Republican | 1 |
| Larry Chubb | U.S. House | IN | Democratic | 1 |
| Judy Chu | U.S. House | CA | Democratic | 1 |
| Nnaetoo Sir Chukwu | President | US | Independent | 1 |
| Andrew Heartdoc Chung | President | US | NON | 1 |
| Pano Churchill | U.S. Senate | WA | Democratic | 1 |
| Vangela Churchill | U.S. House | TX | Republican | 2 |
| Vangela Churchill | U.S. House | TX | Republican | 1 |
| Jason Church | U.S. House | WI | Republican | 1 |
| Jason Edward Churilla | President | US | Democratic | 1 |
| Weiming David MD Chu | U.S. House | CA | Republican | 1 |
| Rocco Ciappa | U.S. House | TX | Democratic | 1 |
| Gina Renee Ciarcia | U.S. House | VA | Republican | 1 |
| Joseph John Ciardullo | U.S. House | NY | REF | 1 |
| Guy Ciarrocchi | U.S. House | PA | Republican | 1 |
| David N. Cicilline | U.S. House | RI | Democratic | 1 |
| Erick Cid | President | US | Republican | 1 |
| Jason Cienkus | U.S. House | CA | Democratic | 1 |
| William E. Cimbrelo | U.S. House | MA | Democratic | 1 |
| Rebecca Niess Cingolani | U.S. House | SC | Democratic | 1 |
| Marlene Cintron | U.S. House | NY | Democratic | 1 |
| Russell Cirincione | U.S. House | NJ | Democratic | 1 |
| Juan Ciscomani | U.S. House | AZ | Republican | 2 |
| Gilbert Cisneros | U.S. House | CA | Democratic | 1 |
| Jessica Cisneros | U.S. House | TX | Democratic | 1 |
| Laura E. Cisneros | U.S. House | TX | Democratic | 1 |
| Sharon Clahchischilliage | U.S. House | NM | Republican | 1 |
| Daniel A. Claitor | U.S. House | LA | Republican | 1 |
| Mike Clancy | U.S. House | VA | Republican | 2 |
| Walter Douglas Clapp | President | US | Republican | 1 |
| Anthony Clark | U.S. House | IL | Democratic | 1 |
| Chimer Davis Clark Jr. | U.S. House | NC | Republican | 1 |
| Christopher James Clark | U.S. House | MI | Libertarian | 1 |
| Cornell Maurice Clark | U.S. Senate | NV | NON | 1 |
| Curtis Clark | U.S. House | MI | Republican | 1 |
| Curtis Clark | U.S. House | MI | UST | 1 |
| Dennis Jeffrey Clark | U.S. House | TN | Independent | 2 |
| Drew-Montez Clark | U.S. House | FL | Republican | 1 |
| Yvette D. Clarke | U.S. House | NY | Democratic | 2 |
| Janis Meneatrice Clark | U.S. House | WA | Republican | 1 |
| John Clark | U.S. House | TN | Republican | 2 |
| Joshua Stephen Clark | U.S. Senate | GA | Republican | 1 |
| Julie Clark | U.S. House | TX | Republican | 1 |
| Katherine Clark | U.S. House | MA | Democratic | 1 |
| Landrus Steven Clark | President | US | OTH | 1 |
| Melvin Wayne Clark | President | US | Democratic | 1 |
| Mike Clark | U.S. House | TX | Democratic | 1 |
| Oren Salomon Clark | President | US | UNK | 1 |
| Randall Clark | U.S. House | NH | Republican | 1 |
| Robert Benjamin Clark III | U.S. House | NC | Democratic | 1 |
| Gavin Clarkson | U.S. Senate | NM | Republican | 1 |
| Tarryl Lynn Clark | U.S. House | MN | Democratic | 1 |
| Travis R. Clark | U.S. House | WI | Republican | 1 |
| Wyatt Bronson Clark | U.S. House | MI | Democratic | 1 |
| Shaun Michael Clarmont | U.S. House | WI | Republican | 1 |
| James Brian Lone Crow Clasby | U.S. House | NY | Independent | 1 |
| Thomas Clatterbuck | U.S. House | IL | Republican | 1 |
| Cassidy Allen-Jones Clausen | U.S. House | OR | Democratic | 1 |
| Santa Claus | U.S. House | AK | UN | 1 |
| Matthew Corey Clauss | U.S. House | MI | Democratic | 1 |
| Brittany Claybrooks | U.S. House | NJ | Democratic | 1 |
| Mark Daniel Clay | U.S. House | GA | Republican | 1 |
| Nathan Clay | U.S. House | CO | Democratic | 1 |
| William Lacy Clay Jr. | U.S. House | MO | Democratic | 1 |
| Emanuel Cleaver II | U.S. House | MO | Democratic | 1 |
| Frederick James Clegg | President | US | Libertarian | 1 |
| Christina Loren LLC Clement | President | US | Republican | 1 |
| Gary Carmen Clemente | President | US | Independent | 1 |
| Mary Clement | President | US | Democratic | 1 |
| Eli Dantzler Clemmer | U.S. House | NH | Republican | 1 |
| Christopher Kelly Clemmons | U.S. House | KS | Libertarian | 1 |
| Mitchell Clemmons | U.S. House | CA | Republican | 1 |
| Hosea N. Cleveland | U.S. House | SC | Democratic | 1 |
| Rocio Cleveland | U.S. House | IL | Republican | 1 |
| Scott Cleveland | U.S. House | ID | Republican | 1 |
| Scott Oh Cleveland | U.S. Senate | ID | UN | 1 |
| Shenita 'Shae' Cleveland | U.S. House | TX | Democratic | 1 |
| Taylor Cleveland | President | US | IAP | 1 |
| Nathan Click | U.S. House | NC | Democratic | 1 |
| Bill Clifford | U.S. House | KS | Republican | 1 |
| David Clifford | U.S. House | CA | Republican | 1 |
| Sianay Chase Clifford | U.S. House | VT | Democratic | 1 |
| Tirell Alexander Maxwell Clifton | President | US | Democratic | 1 |
| Benjamin Lee Cline | U.S. House | VA | Republican | 1 |
| Natalie Cline | U.S. House | WV | Democratic | 1 |
| Hillary Rodham Clinton | U.S. Senate | NY | Democratic | 1 |
| Hillary Rodham /. Timothy Michael Kaine Clinton | President | US | Democratic | 1 |
| Michael Cloud | U.S. House | TX | Republican | 1 |
| Jerame Clough V | U.S. House | WA | Democratic | 1 |
| Gary Dean Clouse | U.S. House | TN | Republican | 1 |
| James E. Clyburn | U.S. House | SC | Democratic | 1 |
| Andrew Clyde | U.S. House | GA | Republican | 1 |
| Sean R. Clynch | U.S. House | WA | Republican | 1 |
| David Adam Coatney | U.S. House | NC | Libertarian | 1 |
| Angel Luis Coba | U.S. House | FL | Republican | 1 |
| Kurt Donald Cobain | U.S. Senate | WA | Democratic | 1 |
| Kurt Cobain Sr. | U.S. Senate | WA | Republican | 1 |
| Daniel Cobble | U.S. House | KY | Republican | 1 |
| Tedra Cobb | U.S. House | NY | Democratic | 1 |
| Michael Coburn | U.S. House | MD | Democratic | 1 |
| John Cochran | U.S. House | AL | Libertarian | 1 |
| Leslie Cockburn | U.S. House | VA | Democratic | 1 |
| Arthur MD Coday Jr. | U.S. Senate | WA | Republican | 1 |
| Kathy Coder | U.S. House | PA | Republican | 1 |
| Wacey Alpha Cody | U.S. House | TX | Libertarian | 1 |
| C. Mark Coester | U.S. Senate | VT | AIP | 1 |
| C. Mark Coester | U.S. House | VT | Republican | 1 |
| Mike Coffman | U.S. House | CO | Republican | 2 |
| Robert (Bob) Paul Coffman | U.S. House | FL | Democratic | 1 |
| Michael Cogbill | U.S. House | PA | Democratic | 1 |
| John B. Coghill Jr. | U.S. House | AK | Republican | 1 |
| Edward G. Cohen | U.S. House | NV | Democratic | 1 |
| Howard Russell Cohen | President | US | Independent | 1 |
| Lawrence Cohen | U.S. House | OH | Republican | 1 |
| Ronald H. Cohen | U.S. House | CA | Republican | 1 |
| Seth Alan Cohen | U.S. House | IL | Republican | 1 |
| Stephen Ira Cohen | U.S. House | TN | Democratic | 1 |
| Tina Blum Cohen | U.S. House | TX | Republican | 1 |
| Alan Cohn | U.S. House | FL | Democratic | 2 |
| Joseph Cohn | U.S. House | NJ | Democratic | 1 |
| Adam Coker | U.S. House | NC | Democratic | 1 |
| Elijah Mx Coker | U.S. House | MD | Democratic | 1 |
| Lloyd F. Coker | U.S. House | TX | CRV | 1 |
| Caroline Colarusso | U.S. House | MA | Republican | 1 |
| Caroline Colarusso | U.S. House | MA | Republican | 1 |
| Elizabeth Colbert Busch | U.S. House | SC | Democratic | 1 |
| Chip Winter Coldiron | U.S. House | IN | Democratic | 1 |
| Darren Cole | U.S. House | NY | Democratic | 1 |
| Donald Eugene Cole | U.S. House | GA | Republican | 1 |
| Jahmal Cole | U.S. House | IL | Democratic | 1 |
| Jonathon Dale Cole | U.S. House | IN | Democratic | 1 |
| Andy Coleman | U.S. House | OK | Republican | 1 |
| Bernard Wade Coleman Jr. | U.S. House | CO | Democratic | 1 |
| Bonnie Watson Coleman | U.S. House | NJ | Democratic | 1 |
| Gerry Coleman | President | US | Democratic | 1 |
| Jeff Coleman | U.S. House | AL | Republican | 1 |
| Jeff Coleman | U.S. House | AL | Republican | 1 |
| Kim Coleman | U.S. House | UT | Republican | 1 |
| Linda Coleman | U.S. House | NC | Democratic | 1 |
| Lynn Carnell Coleman | U.S. House | IN | Democratic | 1 |
| Mary Elizabeth Coleman | U.S. House | MO | Republican | 1 |
| Merika Coleman | U.S. House | AL | Democratic | 1 |
| Octavia Coleman | U.S. House | GA | Democratic | 1 |
| Marqus A. Cole | U.S. House | GA | Democratic | 1 |
| Thomas Cole | U.S. House | CA | Republican | 1 |
| Tom Cole | U.S. House | OK | Republican | 2 |
| Gregory Thomas Coll | U.S. House | MD | Republican | 1 |
| Gina Rockey Collias | U.S. House | NC | Democratic | 1 |
| John William Collick Jr. | U.S. House | VA | Republican | 1 |
| Matt Collier | U.S. House | MI | Democratic | 1 |
| Scott Collier | U.S. House | TX | Independent | 1 |
| Abel Gifford Collins | U.S. House | RI | Independent | 1 |
| Andrew Collins | President | US | Independent | 1 |
| Christian Collins | U.S. House | TX | Republican | 1 |
| Christopher C. Collins | U.S. House | NY | Republican | 3 |
| Douglas Allen Collins | U.S. House | GA | Republican | 1 |
| Douglas Allen Collins | U.S. Senate | GA | Republican | 1 |
| Frederick G. Rick' Collins | U.S. House | AL | Democratic | 1 |
| Genevieve D. Collins | U.S. House | TX | Republican | 2 |
| Hayden Thomas Collins Jr. | U.S. House | GA | Republican | 1 |
| Jacqueline Collins | U.S. House | IL | Democratic | 1 |
| Jay Collins | U.S. House | FL | Republican | 1 |
| Joe Collins | U.S. House | CA | Republican | 2 |
| Joe Edward Collins | U.S. House | CA | Democratic | 1 |
| Joe Edward Collins III | President | US | Republican | 1 |
| Joseph Collins | President | US | Republican | 1 |
| Joseph Collins Collins Jr. | President | US | Libertarian | 1 |
| Joshua Collins | U.S. House | WA | W | 1 |
| Kina Isis Collins | U.S. House | IL | Democratic | 3 |
| Michael A. Collins Jr. | U.S. House | GA | Republican | 1 |
| Nazzarae Collins | President | US | Democratic | 1 |
| Sean Collinson | President | US | Independent | 1 |
| Paula Collins | U.S. House | NY | Democratic | 1 |
| Shawn Collins | U.S. House | CA | Republican | 1 |
| Susan M. Collins | U.S. Senate | ME | Republican | 2 |
| Susan Collin | U.S. House | CA | Independent | 1 |
| Wilmot James Collins | U.S. Senate | MT | Democratic | 1 |
| Noel Collis | U.S. House | MN | Republican | 1 |
| Michael Christopher Colombe | U.S. House | CO | Democratic | 1 |
| Michael Christopher Colombe | President | US | Republican | 1 |
| Malcolm Thomas Colombo | U.S. House | MD | Democratic | 1 |
| Robert Colon | U.S. Senate | NC | Democratic | 1 |
| Timothy Matthew Colopy | President | US | Independent | 1 |
| Keith C. Colton | U.S. House | OH | Republican | 1 |
| John Columbus | U.S. Senate | FL | Republican | 1 |