Surnames beginning with "K"
- Kaptur, Marcy, Ohio, 9th
- Keating, William, Massachusetts, 10th
- Kelly, Mike, Pennsylvania, 3rd
- Kildee, Dale, Michigan, 5th
- Kind, Ron, Wisconsin, 3rd
- King, Pete, New York, 3rd
- King, Steve, Iowa, 5th
- Kingston, Jack, Georgia, 1st
- Kinzinger, Adam, Illinois, 11th
- Kissell, Larry, North Carolina, 8th
- Kline, John, Minnesota, 2nd
- Kucinich, Dennis J., Ohio, 10th