Julio Fernández may refer to: Júlio "Foca" Fernandez Brazilian jiu-jitsu champion and instructor Julio Ángel Fernández (born 1946), Uruguayan astronomer who hypothesised the existence of what became known as the Kuiper belt Julio M. Fernandez (born 1954), Chilean Professor in the Department of Biological Sciences at Columbia University, New York, USA Julio Fernández (musician) (born 1954), guitarist of jazz fusion/smooth jazz group Spyro Gyra Julio Fernández (film producer), co-founder of the Fantastic Factory film studio