As of October 2023, there are several rappers who are currently in jail or prison. Here is a list of some of the most notable ones:

1. Young Thug
2. YNW Melly
3. Casanova
4. 42 Dugg
5. Tay-K
6. Lil Jay
7. Bankroll Freddie
8. Tory Lanez
9. AR-AB
10. Ralo
11. Rio
12. Foogiano

These rappers are in jail or prison for various reasons, including drug possession, illegal weapons possession, racketeering, and murder. It is important to note that this list is not exhaustive and that there may be other rappers who are currently incarcerated.