João Fonseca
João Fonseca is the name of the following people:
- João Fonseca (soccer player) (born 1948), Portuguese soccer player and coach
- João de Barros Ferreira da Fonseca (1899–1968), Portuguese diplomat
- João Corregedor da Fonseca (journalist) (1873-1921), Portuguese journalist
- João Corregedor da Fonseca (politician) (* 1938), Portuguese politician
- João Vicente da Fonseca († 1587), Patriarch of the East Indies
