Guillermo Díaz
Guillermo Díaz is the name of the following people:
- Guillermo Díaz (soccer player) (born 1930), Chilean soccer player
- Guillermo Díaz (wrestler) (born 1964), Mexican wrestler
- Guillermo Díaz (presenter) (* 1971), American presenter
- Guillermo Díaz (actor) (born 1975), American actor
- Guillermo Díaz (basketball player) (born 1985), Puerto Rican basketball player
- Guillermo Díaz Gastambide (* 1979), Uruguayan football player
- Guillermo Díaz-Plaja (1909–1984), Spanish essayist, poet, literary critic and historian