J
| Name | Year(s) | Appeared on | Instrument |
|---|---|---|---|
| Fred Jackson, Jr. | 1972 | The Grand Wazoo | Woodwinds |
| Jules Jacob | 1968 | Lumpy Gravy | Woodwinds |
| Janschi | 1985, 1996 | The Lost Episodes | Bass |
| Eddie Jobson | 1976–1978, 1981, 1992, 1996, 1997 | Zappa in New York, Studio Tan, Shut Up 'n Play Yer Guitar, You Can't Do That on Stage Anymore, Vol. 6, Läther, Have I Offended Someone? | Keyboards, Violin, Vocals |
| John Johnson | 1966 | Freak Out! | Tuba |
| Plas Johnson | 1966 | Freak Out! | Saxophone |
| Pete Jolly | 1968 | Lumpy Gravy | Keyboards |
Read more about this topic: List Of Performers On Frank Zappa Records