Guillermo Ortiz
Guillermo Ortiz is the name of the following people:
- Guillermo Ortiz Camargo (1939–2009), Mexican soccer player
- Guillermo Ortiz Martínez (* 1948), Mexican economist
- Guillermo Ortiz Mayagoitia (* 1941), Mexican lawyer and judge
- Guillermo Rodrigo Teodoro Ortiz Mondragón (* 1947), Mexican priest, Bishop of Cuautitlán