| Singer Lola | 11 |
| Singer Lopez | 12 |
| Singer Loretta | 14 |
| Singer Loretta ___ | 18 |
| Singer Lorna | 12 |
| Singer Lotte | 12 |
| Singer Lou | 10 |
| Singer Lou from Chicago | 23 |
| Singer Lou ___ | 14 |
| Singer Lovato | 13 |
| Singer Love of 60's pop | 27 |
| Singer Love who was one of the subjects of "20 Feet From Stardom" | 75 |
| Singer Lovett | 13 |
| Singer Lovich | 13 |
| Singer Lucine | 13 |
| Singer Lucrezia | 15 |
| Singer Luft | 11 |
| Singer LuPone | 13 |
| Singer Lyle | 11 |
| Singer Lynn | 11 |
| Singer MacNeil | 14 |
| Singer MacNeil, for one | 23 |
| Singer MacNeill, for one | 24 |
| Singer Mahal | 12 |
| Singer Makeba | 13 |
| Singer Manchester | 17 |
| Singer Manchester et al. | 24 |
| Singer Mandrell | 15 |
| Singer Manilow | 14 |
| Singer Mann | 11 |
| Singer Mann with a "Big Lebowski" role | 48 |
| Singer Marc with the 1991 hit "Walking in Memphis" | 60 |
| Singer Mariah | 13 |
| Singer Mariah ___ | 17 |
| Singer Marian | 13 |
| Singer Marie | 12 |
| Singer Marie on the Vegas scene | 31 |
| Singer Marilyn | 14 |
| Singer Marilyn or Lena | 22 |
| Singer Marni | 12 |
| Singer Marni ___ | 16 |
| Singer married to Heidi Klum | 28 |
| Singer Mars | 11 |
| Singer Martin | 13 |
| Singer Martin, to friends | 25 |
| Singer Martini | 14 |
| Singer Marvin | 13 |
| Singer Marvin Lee Aday, familiarly | 34 |
| Singer Mary | 11 |
| Singer Mary J. | 14 |
| Singer Mary ___ Carpenter | 25 |
| Singer Matthews | 15 |
| Singer McCann | 13 |
| Singer McCann and namesakes | 27 |
| Singer McCartney | 16 |
| Singer McCoy and composer Hefti | 31 |
| Singer McCracken of The Used | 28 |
| Singer McEntire | 15 |
| Singer McEntire and others | 26 |
| Singer McGovern | 15 |
| Singer McGraw | 13 |
| Singer McLachlan | 16 |
| Singer McLaughlan | 17 |
| Singer McLaughlin | 17 |
| Singer McLean | 13 |
| Singer McLean or comic Rickles | 30 |
| Singer Mel | 10 |
| Singer Mel ("The Velvet Fog") | 39 |
| Singer Mel and namesakes | 24 |
| Singer Melba | 12 |
| Singer Melissa from the Bronx | 29 |
| Singer memorizing lines | 23 |
| Singer mentioned in the lyrics to the song "Blame Canada" | 67 |
| Singer Menzel with the album "I Stand" | 48 |
| Singer Mercer | 13 |
| Singer Merchant | 15 |
| Singer Merle | 12 |
| Singer Merman | 13 |
| Singer Merriman | 15 |
| Singer Michael | 14 |
| Singer Michael of R.E.M. | 24 |
| Singer Michelle or Cass | 23 |
| Singer Midge | 12 |
| Singer Midler | 13 |
| Singer Milsap | 13 |
| Singer Mimi | 11 |
| Singer Minaj | 12 |
| Singer Mineo | 12 |
| Singer Minnelli | 15 |
| Singer Minogue | 14 |
| Singer Mitchell | 15 |
| Singer Mitchell impersonated on "30 Rock" | 51 |
| Singer Mitzi or Gloria | 22 |
| Singer Montand | 14 |
| Singer Montgomery | 17 |
| Singer Moore | 12 |
| Singer Moreno | 13 |
| Singer Morissette | 17 |
| Singer Morse with the 1952 hit "The Blacksmith Blues" | 63 |
| Singer Morton ___ | 17 |