Jose Diaz may refer to:
- José Díaz (politician), Spanish politician
- Jose "Pepi" Diaz, American attorney and The Apprentice contestant
- Joselo Díaz, Major League Baseball player
- Jose Diaz-Balart, American journalist
- See José and Francisco Díaz, Puerto Rican soldiers who defended Puerto Rico against a British invasion in 1797
- José Narciso Díaz, Cuban Olympic fencer
- José Ramón Díaz (born 1973), Puerto Rican Senator
- José Díaz (rugby player), Spanish rugby union player