O.J. Simpson's gonna be a wanted man in the rap game once he's out on parole -- so says UFC champ Tyron Woodley, who's convinced The Juice is gettin' loose in music videos.

O.J.'s already got a famous brothel and autograph company ready to pay out ... and Woodley told TMZ Sports he thinks rappers as high up as Jay Z might wanna book the guy for a cameo. 

FYI, "The Story of O.J." was one of Jay's hottest tracks on 4:44 ... and guys like Future, 50 Cent and Jeezy also dropped their own bangers featuring O.J. in the title. 

Maybe Tyron's on to something ...