Mariano Fernández may refer to:
(1718–1789), Mexican writer, philosopher and historian; see Lorenzo Boturini Benaduci Mariano Fernández (Chilean diplomat) (born 1945), Chilean politician and diplomat Mariano Fernández Bermejo (born 1948), Spanish politician and jurist Mariano Fernández (footballer, born 1978), Argentine defender for Club Atlético Lanús Mariano Fernández (footballer, born 1988), Argentine defender for Club Agropecuario Argentino Mariano Fernández (politician), vice-governor of La Pampa Province, Argentina