Guillermo Diaz may refer to:
- Guillermo Díaz-Plaja (1909–1984), Spanish literary critic, historian and poet.
- Guillermo Díaz (footballer, born 1926), Chilean footballer
- Guillermo Díaz (footballer, born 1930) (1930–1997), Chilean footballer
- Guillermo Díaz Gea (born 1944), Mexican politician
- Guillermo Díaz (wrestler) (born 1964), Mexican Olympic wrestler
- Guillermo Díaz (actor) (born 1975), American actor
- Guillermo Díaz (footballer, born 1979), Uruguayan footballer
- Guillermo Diaz (basketball) (born 1985), Puerto Rican basketball player
- Guillermo Díaz (footballer, born 1994), Chilean footballer
- Memo Diaz, (born 1995), American soccer player
Topics referred to by the same termThis disambiguation page lists articles about people with the same name. If an internal link led you here, you may wish to change the link to point directly to the intended article.