| Name | Rate this Judge | Rating | # of Ratings |
| Hon. MIranda M. Du (D.Nev.) |  | 3.8 | 4 |
| Hon. Jane E. Magnus-Stinson (S.D.Ind.) | | 4.1 | 1 |
| Hon. Paul A. Magnuson (D.Minn.) | | 6.9 | 3 |
| Hon. James C. Mahan (D.Nev.) | | 7.0 | 14 |
| Hon. Nancy L. Maldonado (N.D.Ill.) | | 0.0 | 0 |
| Hon. Paul Lewis Maloney (W.D.Mich.) | | 9.3 | 2 |
| Hon. Robert B. Maloney (N.D.Tex.) | | 7.2 | 3 |
| Hon. Anna M. Manasco (N.D.Ala.) | | 0.0 | 0 |
| Hon. Joaquin V. Manibusan, Jr. (D.Guam) | | 0.0 | 0 |
| Hon. Daniel A. Manion (C.C.A) | | 0.0 | 1 |
| Hon. Blanche M. Manning (N.D.Ill.) | | 6.0 | 13 |
| Hon. Malachy E. Mannion (M.D.Pa.) | | 5.5 | 2 |
| Hon. Algenon L. Marbley (S.D.Ohio) | | 6.0 | 3 |
| Hon. Stanley Marcus (C.C.A) | | 0.0 | 0 |
| Hon. Robert D. Mariani (M.D.Pa.) | | 0.0 | 0 |
| Hon. Gina Marie Groh (N.D.W.Va.) | | 0.0 | 1 |
| Hon. Stephanie Marie Rose (S.D.Iowa) | | 0.0 | 1 |
| Hon. George M. Marovich (N.D.Ill.) | | 1.4 | 2 |
| Hon. Rosemary Marquez (D.Ariz.) | | 7.0 | 1 |
| Hon. Kenneth A. Marra (S.D.Fla.) | | 8.8 | 4 |
| Hon. Victor Marrero (S.D.N.Y.) | | 6.5 | 25 |
| Hon. Malcolm F. Marsh (D.Or.) | | 9.0 | 1 |
| Hon. Consuelo B. Marshall (C.D.Cal.) | | 3.9 | 12 |
| Hon. D.P. Marshall Jr. (E.D.Ark.) | | 7.3 | 3 |
| Hon. Karen S. Marston (E.D.Pa.) | | 0.0 | 1 |
| Hon. J. Thomas Marten (D.Kan.) | | 8.5 | 2 |
| Hon. Beverly B. Martin (C.C.A) | | 7.7 | 6 |
| Hon. William J. Martinez (D.Colo.) | | 7.0 | 9 |
| Hon. Ricardo S. Martinez (W.D.Wash.) | | 3.6 | 25 |
| Hon. Jose E. Martinez (S.D.Fla.) | | 5.0 | 7 |
| Hon. Areceli Martinez-Olgun (N.D.Cal.) | | 0.0 | 0 |
| Hon. William J. Martini (D.N.J.) | | 4.6 | 7 |
| Hon. Brian R. Martinotti (D.N.J.) | | 0.0 | 0 |
| Hon. Frederick J. Martone (D.Ariz.) | | 3.8 | 6 |
| Hon. Mark G. Mastroianni (D.Mass.) | | 0.0 | 0 |
| Hon. Paul B. Matey (C.C.A) | | 0.0 | 0 |
| Hon. Scott M. Matheson, Jr. (C.C.A) | | 0.0 | 1 |
| Hon. Andre Mathis (C.C.A) | | 0.0 | 0 |
| Hon. Richard P. Matsch (D.Colo.) | | 6.3 | 15 |
| Hon. Kiyo A. Matsumoto (E.D.N.Y.) | | 8.8 | 7 |
| Hon. Henry S. Mattice, Jr. (E.D.Tenn.) | | 0.0 | 0 |
| Hon. Roslynn R. Mauskopf (E.D.N.Y.) | | 6.9 | 7 |
| Hon. Leigh Martin May (N.D.Ga.) | | 1.5 | 3 |
| Hon. Samuel H. Mays (W.D.Tenn.) | | 8.8 | 2 |
| Hon. Amos L. Mazzant (E.D.Tex.) | | 5.4 | 5 |
| Hon. Steven J. McAuliffe (D.N.H.) | | 8.7 | 3 |
| Hon. Thomas J. McAvoy (N.D.N.Y.) | | 6.0 | 18 |
| Hon. John H. McBryde (N.D.Tex.) | | 4.3 | 25 |
| Hon. Landya B. McCafferty (D.N.H.) | | 8.4 | 5 |
| Hon. Jon Phipps McCalla (W.D.Tenn.) | | 7.0 | 4 |
| Hon. Joe Billy McDade (C.D.Ill.) | | 9.3 | 4 |
| Hon. Mary S. McElroy (D.R.I.) | | 0.0 | 0 |
| Hon. Trevor N. McFadden (D.D.C.) | | 10.0 | 1 |
| Hon. Matthew W. McFarland (S.D.Ohio) | | 0.0 | 0 |
| Hon. Stephen P. McGlynn (S.D.Ill.) | | 0.0 | 0 |
| Hon. Walter T. McGovern (W.D.Wash.) | | 0.0 | 0 |
| Hon. Carolyn B. McHugh (C.C.A) | | 0.0 | 0 |
| Hon. Gerald A. McHugh, Jr. (E.D.Pa.) | | 9.5 | 2 |
| Hon. Monroe G. McKay (C.C.A) | | 0.0 | 0 |
| Hon. David W. McKeague (C.C.A) | | 0.0 | 0 |
| Hon. Theodore A. McKee (C.C.A) | | 0.0 | 0 |
| Hon. M. Margaret McKeown (C.C.A) | | 0.0 | 1 |
| Hon. Howard D. McKibben (D.Nev.) | | 9.8 | 2 |
| Hon. Joseph H. McKinley, Jr. (W.D.Ky.) | | 0.0 | 2 |
| Hon. Larry J. McKinney (S.D.Ind.) | | 9.7 | 1 |
| Hon. Mary A. Mclaughlin (E.D.Pa.) | | 8.7 | 11 |
| Hon. Colleen McMahon (S.D.N.Y.) | | 4.9 | 55 |
| Hon. Edward J. McManus (N.D.Iowa) | | 3.9 | 9 |
| Hon. Stephen M. McNamee (D.Ariz.) | | 7.0 | 4 |
| Hon. Taylor B. McNeel (S.D.Miss.) | | 0.0 | 0 |
| Hon. Kevin McNulty (D.N.J.) | | 0.0 | 0 |
| Hon. Michael J. McShane (D.Or.) | | 3.5 | 2 |
| Hon. Terry R. Means (N.D.Tex.) | | 6.1 | 15 |
| Hon. Amit Priyavadan Mehta (D.D.C.) | | 0.0 | 1 |
| Hon. Tucker L. Melancon (W.D.La.) | | 7.1 | 6 |
| Hon. Eric F. Melgren (D.Kan.) | | 4.6 | 3 |
| Hon. Michael J. Melloy (C.C.A) | | 0.0 | 0 |
| Hon. Howell W. Melton (M.D.Fla.) | | 0.0 | 0 |
| Hon. Steven J. Menashi (C.C.A) | | 0.0 | 0 |
| Hon. John A. Mendez (E.D.Cal.) | | 1.4 | 4 |
| Hon. Gina R. Méndez-Miró (D.P.R.) | | 0.0 | 0 |
| Hon. Carlos Eduardo Mendoza (M.D.Fla.) | | 4.4 | 2 |
| Hon. Salvador Mendoza, Jr. (C.C.A) | | 0.0 | 0 |
| Hon. Katherine M. Menendez (D.Minn.) | | 0.0 | 0 |
| Hon. Sarah A. L. Merriam (D.D.C.) | | 0.0 | 0 |
| Hon. Sarah A. L. Merriam (C.C.A) | | 0.0 | 0 |
| Hon. Steven D. Merryday (M.D.Fla.) | | 9.6 | 3 |
| Hon. Peter J. Messitte (D.Md.) | | 5.9 | 26 |
| Hon. Jeffrey Alker Meyer (D.Conn.) | | 10.0 | 1 |
| Hon. Laurie J. Michelson (E.D.Mich.) | | 9.6 | 3 |
| Hon. Donald M. Middlebrooks (S.D.Fla.) | | 7.3 | 11 |
| Hon. Michael M. Mihm (C.D.Ill.) | | 6.6 | 8 |
| Hon. Barbara Milano Keenan (C.C.A) | | 0.0 | 3 |
| Hon. Jane Triche Milazzo (E.D.La.) | | 9.3 | 3 |
| Hon. Vicki Miles-LaGrange (W.D.Okla.) | | 0.0 | 0 |
| Hon. Eric D. Miller (C.C.A) | | 0.0 | 0 |
| Hon. Jeffrey T. Miller (S.D.Cal.) | | 8.0 | 7 |
| Hon. Brian S. Miller (E.D.Ark.) | | 2.0 | 1 |
| Hon. Gray H. Miller (S.D.Tex.) | | 8.2 | 2 |
| Hon. Robert L. Miller, Jr. (N.D.Ind.) | | 0.0 | 0 |
| Hon. Patricia A. Millett (C.C.A) | | 0.0 | 0 |
| Hon. Michael P. Mills (N.D.Miss.) | | 9.5 | 2 |
| Hon. Richard Mills (C.D.Ill.) | | 8.1 | 5 |
| Hon. Angela D. Mitchell (D.Kan.) | | 0.0 | 0 |
| Hon. Kathryn K. Mizelle (M.D.Fla.) | | 0.0 | 0 |
| Hon. Donald W. Molloy (D.Mont.) | | 5.4 | 7 |
| Hon. Susan Oki Mollway (D.Haw.) | | 9.5 | 1 |
| Hon. Frank Montalvo (W.D.Tex.) | | 7.7 | 20 |
| Hon. Lara Montecalvo (C.C.A) | | 0.0 | 0 |
| Hon. Ruth B. Montenegro (S.D.Cal.) | | 0.0 | 0 |
| Hon. Ann D. Montgomery (D.Minn.) | | 6.4 | 8 |
| Hon. Tamika Montgomery-Reeves (C.C.A) | | 0.0 | 0 |
| Hon. James T. Moody (N.D.Ind.) | | 2.3 | 2 |
| Hon. James M. Moody Jr. (E.D.Ark.) | | 7.1 | 5 |
| Hon. James S. Moody, Jr. (M.D.Fla.) | | 5.9 | 3 |
| Hon. Norman K. Moon (W.D.Va.) | | 4.3 | 5 |
| Hon. K. Michael Moore (S.D.Fla.) | | 4.4 | 30 |
| Hon. Raymond P. Moore (D.Colo.) | | 2.3 | 8 |
| Hon. John H. Moore, II (M.D.Fla.) | | 0.0 | 0 |
| Hon. William T. Moore, Jr. (S.D.Ga.) | | 0.0 | 0 |
| Hon. David Steven Morales (S.D.Tex.) | | 0.0 | 0 |
| Hon. Norman A. Mordue (N.D.N.Y.) | | 5.9 | 9 |
| Hon. Federico A. Moreno (S.D.Fla.) | | 8.0 | 23 |
| Hon. Susie Morgan (E.D.La.) | | 4.2 | 1 |
| Hon. Nancy L. Moritz (C.C.A) | | 0.0 | 0 |
| Hon. Brian Morris (D.Mont.) | | 0.0 | 0 |
| Hon. Nina Morrison (E.D.N.Y.) | | 0.0 | 0 |
| Hon. Sarah D. Morrison (S.D.Ohio) | | 0.0 | 0 |
| Hon. Alia Moses (W.D.Tex.) | | 4.4 | 4 |
| Hon. Barry Ted Moskowitz (S.D.Cal.) | | 8.3 | 8 |
| Hon. Michael W. Mosman (D.Or.) | | 7.2 | 8 |
| Hon. Randolph D. Moss (D.D.C.) | | 0.0 | 0 |
| Hon. Diana Gribbon Motz (C.C.A) | | 0.0 | 2 |
| Hon. J. Frederick Motz (D.Md.) | | 5.7 | 25 |
| Hon. Kimberly J. Mueller (E.D.Cal.) | | 6.9 | 7 |
| Hon. Graham C. Mullen (W.D.N.C.) | | 8.4 | 4 |
| Hon. James M. Munley (M.D.Pa.) | | 4.0 | 15 |
| Hon. Carlos Murguia (D.Kan.) | | 3.5 | 4 |
| Hon. Mary H. Murguia (C.C.A) | | 0.0 | 0 |
| Hon. Diana E. Murphy (C.C.A) | | 0.0 | 0 |
| Hon. John F. Murphy (E.D.Pa.) | | 0.0 | 0 |
| Hon. Michael R. Murphy (C.C.A) | | 0.0 | 0 |
| Hon. Eric E. Murphy (C.C.A) | | 0.0 | 0 |
| Hon. Harold L. Murphy (N.D.Ga.) | | 9.9 | 2 |
| Hon. G. Patrick Murphy (S.D.Ill.) | | 6.5 | 9 |
| Hon. Stephen Joseph Murphy III (E.D.Mich.) | | 8.3 | 4 |
| Hon. Richard E. Myers II (E.D.N.C.) | | 0.0 | 0 |
| Hon. Sue E. Myerscough (C.D.Ill.) | | 0.0 | 0 |