- Ann M. Kuster Representative from NH, 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
- Doug Lamborn Representative from CO, 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
- Robert E. Latta Representative from OH, Republican
- Jake LaTurner Representative from KS, Republican
- Michael Lawler Representative from NY, Republican
- Barbara Lee Representative from CA, Democratic
- Laurel M. Lee Representative from FL, Republican
- Summer L. Lee Representative from PA, Democratic
- Susie Lee Representative from NV, Democratic
- Erica Lee Carter Representative from TX, Democratic
- Teresa Leger Fernandez Representative from NM, Democratic
- Debbie Lesko Representative from AZ, Republican