Finau is a surname. Notable people with the surname include:
Fili Finau (born 1972), Tongan-born Australian rugby union player Inga Finau (born 1994), New Zealand rugby union player Lupeti Finau (died 1979), Tongan civil servant and politician Moʻale Finau (born 1960), Tongan politician Molitoni Finau (1883–1965), Tongan politician Peni Finau (born 1981), Fiji footballer Salesi Finau (born 1973), Tongan rugby footballer Tevita Finau (born 1986), New Zealand-born American football player Tomiteau Finau (died 1984), Tongan civil servant, lawyer and politician Tony Finau (born 1989), American golfer