Guillermo Fernández

Guillermo Fernández may refer to:
 * Guillermo Arriaga Fernández (1926–2014), Mexican dancer, choreographer and composer
 * Guillermo Falasca Fernandez, Spanish volleyball player
 * Guillermo Fernández Vara (born 1958), Spanish politician from the Spanish Socialist Workers' Party who served as the President of Extremadura from 2007 to 2011
 * Guillermo Fernández de Soto (born 1953), Colombian lawyer and diplomat
 * Guillermo Fernández Groizard (born 1960), Spanish film director
 * Guillermo Fernández (footballer, born 1993), Spanish footballer
 * Guillermo Fernández Jurado (born 2013), Argentinian journalist and film director
 * Guillermo Fernández Romo (born 1978), Spanish football manager
 * Guillermo Fernández-Shaw (1893–1965), Spanish poet and journalist
 * Guillermo Fernández (footballer, born 1991), Argentine footballer
 * Guillermo Zorrilla Fernández (born 1963), Mexican politician
 * Guillermo Fernández (footballer, born 2008), Spanish footballer