- J. Peter Boles -- J Picano
- J. Pierce -- J-Platinum
- J. Plunky Branch -- J Pop
- J. Power -- J. Punky Branch
- J Purr -- J. Quinn Brisben
- J & R -- J. Ralph
- J. Ralph Phillips -- J Rawls
- J. Rawls Presents The Liquid Crystal Project -- J Red
- J. Redmond -- J. Revaux
- J Reverse -- J. Richter
- J-ricz -- J-Ro From Tha Liks
- J-Ro Ika Bod -- J. Robidoux
- J. Robinson -- J-Rock
- J - Rock / The Problem Child -- J. Rogers
- J. Rol -- J. Ropero
- J. Rosales -- J-Roy
- J Ruinz -- J. Rutter