Fashanu is a surname. Notable people with the surname include:
Amal Fashanu (born 1988), British presenter, journalist, and fashion designer, daughter of John Fashanu John Fashanu (born 1962), British television presenter and footballer, younger brother of Justin Fashanu, father of Amal Fashanu Justin Fashanu (1961–1998), British footballer and gay activist, older brother of John Fashanu Olu Fashanu (born 2002), American football player