Tatafu is a given name and surname. Notable people with the name include:
Given name Tatafu Moeaki (born 1972), Tongan politician Tatafu Polota-Nau (born 1985), Australian rugby union player
Surname Fepikou Tatafu (born 1975), Tongan former rugby union player Lusitania Tatafu (born 1998), Tongan recurve archer Mason Tatafu (born 2002), Australian footballer Ray Tatafu (born 1995), New Zealand rugby union player Tevita Tatafu (rugby union, born 1996) (born 1996), Japanese rugby union player