Fernando Díaz (fl. 1071–1106) was a Spanish nobleman and military leader.
Fernando Díaz may also refer to:
Fernando Díaz Alberdi (born 1972), former Argentine rugby union footballer, now coach Fernando Díaz (baseball) (1924–1992), Cuban outfielder in Negro league baseball Fernando Díaz (count in Lantarón and Cerezo) (fl. 917–924) Fernando Díaz Domínguez (1932–1983), Cuban-American artist Fernando Díaz (footballer) (born 1961), Chilean football manager and former goalkeeper Fernando Díaz de Haro, Spanish noble of the House of Haro Fernando Díaz de Mendoza y Aguado (1862–1930), Spanish actor, impresario and theatre director Fernando Díaz del Río (born 2003), Spanish artistic swimmer Fernando Díaz de la Vega (born 1953), Mexican lawyer and politician
See also Fernando Dias (born 1977 or 1978), Bissau-Guinean politician and lawyer