Namesakes
Most Valuable Players:
1 winner
Willie Hernández 1984 baseball 
Notable Athletes:
4 soccer, 1 baseball, 1 basketball, 1 rugby, 1 tennis
(soccer) Guillermo Stábile 1905-1966
(soccer) Leonel Sánchez (a.k.a. Guillermo) 1936-2022
(baseball) Willie Hernández 1954-
(tennis) Guillermo García López 1983-
(soccer) Guillermo Ochoa 1985-
(rugby) Juan Figallo (a.k.a. Guillermo) 1988-
(soccer) Juan Cuadrado (a.k.a. Guillermo) 1988-
(basketball) Willy Hernangómez 1994-
Notable Filmmakers:
1 director, 1 screenwriter
Guillermo Arriaga 1958-
Guillermo del Toro 1964-
Notable Writers:
1 author
Guillermo Arriaga 1958-
Olympic Medalists:
1 bronze
(bronze) Federico Kammerichs (a.k.a. Guillermo) 2008 basketball
Oscar Award Winners:
1 director
(director) Guillermo del Toro 2018 The Shape of Water
Other Leaders:
1 president
President Salvador Allende (a.k.a. Guillermo) 1970-1973 Chile