PBJ may stand for:
- Peanut butter and jelly sandwich
- Progressive Black & Journalists, Progressive Black & Journalists
- the US Navy variant of the B-25 Mitchell bomber
- Peter Blundell Jones, British architect and academic
- Peter Bjorn and John, a Swedish indie pop band
- Piyush "Bobby" Jindal, governor of Louisiana
- PBJ (TV channel), an upcoming children's television network in the United States