| Professor Louie |
| Professor Mac Walter |
| Professor Peter O'Brien |
| Professor R.J. Ross |
| Professor Terry's Circus Band Extraordináire |
| Professor Time |
| Professor X |
| Professors of Fun |
| Profile |
| Profuse |
| Profyle |
| Proglem |
| Program the Dead |
| ProGrammar |
| Progressive Radio Choir |
| Progressive String Quartet |
| Proh Mic |
| PROHOM |
| Project 24 |
| Project 46 |
| Project 7X |
| Project 86 |
| Project Bongo |
| Project Born |
| Project G-7 |
| Project Hate MCMXCIX |
| Project Jones |
| Project Kate |
| Project Lee |
| Project Natale |
| Project Pat |
| Project Pitchfork |
| Project V |
| Project Wyze |
| Project X |
| Projection |
| Projecto Uno |
| ProjeKct Four |
| Projekct Two |
| Projekt |
| Projetonave |
| Projota |
| Prok & Fitch |
| Prolapse |
| Prolific |
| Prolific |
| Prom Kings |
| Promise and the Monster |
| Promise Keepers |
| Promise Of Redemption |
| Promise of the Real |
| Promises |
| Promnite |
| Promoe |
| Prompt |
| Prong |
| Pronghorn |
| Proof |
| Proof |
| Propaganda |
| Propaganda |
| Propaganda & Odd Thomas |
| Propagandhi |
| Propain |
| Propellerheads |
| Proper Dos |
| Proper Filthy Naughty |
| Proper Outfit |
| Proper Villains |
| Prophet |
| Prophet |
| Prophet Jones |
| Prophet Posse |
| Prophets |
| Prophets of Rage |
| Propoganda |
| Props |
| Prose |
| ProSound Karaoke Band |
| Prospect |
