| Lady Mountback | 1 |
| Larry Farber | 1 |
| Larry Harper | 1 |
| Lauren Cooper | 3 |
| Lauren's French Teacher | 1 |
| Law Roach | 1 |
| Lawrence Orbach | 1 |
| Lawrence Welk | 1 |
| Le'Stat | 1 |
| Lea | 1 |
| Leader of the Knights Who Say Ni | 1 |
| Legolas | 1 |
| Leona Helmsley | 1 |
| LeVon | 1 |
| Liberace | 3 |
| Librarian | 1 |
| Liese Jackson | 2 |
| Lil Wayne | 1 |
| Lily | 0 |
| Lindsey Buckingham | 0 |
| Lindsey Graham | 1 |
| Lindy | 1 |
| Linus van Pelt | 1 |
| Lisa | 1 |
| Lisa Eversman | 1 |
| Lisa Kudrow | 1 |
| Little Donny | 1 |
| Liz | 2 |
| Lois Lane | 1 |
| Lucas (Luck Ass) | 1 |
| Lucy Ricardo | 2 |
| Lucy van Pelt | 1 |
| Luther | 1 |
| Luther the Ugly Man | 1 |
| Lysol | 1 |
| MacGruber | 1 |
| Madame Karsova | 1 |
| Madonna | 1 |
| Magic Johnson | 1 |
| Maid Marian | 1 |
| Man in Morgue | 1 |
| Man with Routine | 1 |
| Marc Jacobs | 1 |
| Marcie | 1 |
| Marco Rubio | 1 |
| Margaret Hedley | 1 |
| Margaret Jo McCullen | 1 |
| Margaret Jo McCullin | 1 |
| Marilyn Monroe | 3 |
| Mark Cant/Superdude | 1 |
