- Lucy McBath Representative from GA, Democratic
- Kevin McCarthy Representative from CA, Republican
- Michael T. McCaul Representative from TX, Republican
- Lisa C. McClain Representative from MI, Republican
- Jennifer L. McClellan Representative from VA, Democratic
- Tom McClintock Representative from CA, Republican
- Betty McCollum Representative from MN, Democratic
- Richard McCormick Representative from GA, Republican
- Morgan McGarvey Representative from KY, Democratic
- James P. McGovern Representative from MA, Democratic
- Patrick T. McHenry Representative from NC, Republican
- LaMonica McIver Representative from NJ, Democratic
- Cathy McMorris Rodgers Representative from WA, Republican
- Gregory W. Meeks Representative from NY, Democratic
- Robert Menendez Representative from NJ, Democratic
- Grace Meng Representative from NY, Democratic
- Daniel Meuser Representative from PA, Republican
- Kweisi Mfume Representative from MD, Democratic
- Carol D. Miller Representative from WV, Republican
- Mary E. Miller Representative from IL, Republican