- Jennifer A. Kiggans Representative from VA, Republican
- Kevin Kiley Representative from CA, Independent
- Young Kim Representative from CA, Republican
- Kimberlyn King-Hinds Representative from MP, Republican
- Brad Knott Representative from NC, Republican
- Raja Krishnamoorthi Representative from IL, Democratic
- David Kustoff Representative from TN, Republican
- Darin LaHood Representative from IL, Republican
- Nick LaLota Representative from NY, Republican
- Doug LaMalfa Representative from CA, Republican
- Greg Landsman Representative from OH, Democratic
- Nicholas A. Langworthy Representative from NY, Republican
- Rick Larsen Representative from WA, Democratic
- John B. Larson Representative from CT, Democratic
- George Latimer Representative from NY, Democratic
- Robert E. Latta Representative from OH, Republican
- Michael Lawler Representative from NY, Republican
- Laurel M. Lee Representative from FL, Republican
- Summer L. Lee Representative from PA, Democratic
- Susie Lee Representative from NV, Democratic