Pedro da Fonseca or Pedro Fonseca may refer to:
Pedro da Fonseca (cardinal) (died 1422), Portuguese cardinal Pedro da Fonseca (philosopher) (1528–1599), Portuguese Jesuit philosopher and theologian Pedro Vicente Fonseca (born 1935), retired Brazilian basketball player Pedro Fonseca (footballer) (born 1997), Brazilian footballer
See also Peter Fonseca (born 1966), Canadian politician