L
| Name | Year(s) | Appeared on | Instrument |
|---|---|---|---|
| Ruben Ladron de Guevara | 1974, 1976 | Apostrophe ('), Roxy & Elsewhere, Zoot Allures | Vocals |
| Patrolman LaFamine | 1996 | The Lost Episodes | Voice |
| Ricky Lancelotti | 1973, 1996 | Over-Nite Sensation, The Lost Episodes, Läther | Vocals |
| Michael A. Lang | 1968, 1978–1981, 1996, 2004, 2008 | Lumpy Gravy, Studio Tan, Orchestral Favorites, Tinseltown Rebellion, Läther, QuAUDIOPHILIAc, One Shot Deal | Keyboards |
| Neil Le Vang | 1966 | Freak Out! | Guitar |
| John Lennon | 1971, 1992 | Playground Psychotics | Guitar, Vocals |
| André Lewis | 1976, 1979, 1981, 1989, 1996, 1997, 2002, 2004, 2008 | Zoot Allures, Sheik Yerbouti, Shut Up 'n Play Yer Guitar, You Can't Do That on Stage Anymore, Vol. 3, You Can't Do That on Stage Anymore, Vol. 6, Läther, Frank Zappa Plays the Music of Frank Zappa: A Memorial Tribute, Have I Offended Someone?, FZ:OZ, QuAUDIOPHILIAc, One Shot Deal | Keyboards, Vocals |
| Mort Libov | 2007 | The Dub Room Special | Vocals |
| Martin Lickert | 1971, 1992 | 200 Motels, Playground Psychotics | Bass, Voice |
| David Logeman | 1981, 1989, 1991 | Tinseltown Rebellion, You Are What You Is, You Can't Do That on Stage Anymore, Vol. 1, You Can't Do That on Stage Anymore, Vol. 4 | Drums |
| Wayne Lyles | 1996 | The Lost Episodes | Voice |
Read more about this topic: List Of Performers On Frank Zappa Records