Guillermo Alvarez
Guillermo Álvarez may refer to:
- Guillermo Álvarez Macías, Mexican cooperative activist and general manager of Cemento Cruz Azul
- Guillermo Álvarez (baseball), Mexican baseball professional
- Guillermo Álvarez Guedes, Cuban comedian, actor and businessman
- , Uruguayan politician
- Billy Álvarez, Mexican former businessman and former chairman of Cruz Azul
- Guillermo Alvarez (gymnast), American gymnast