Coetzer is a surname. Notable people with the surname include:
Amanda Coetzer (born 1971), South African tennis player Cameron Coetzer (born 1995), South African badminton player Gert Coetzer, South African rugby league player Jacques Coetzer (born 1968), South African artist Kyle Coetzer (born 1984), Scottish cricketer Marius Coetzer (born 1984), South African rugby union player Pierre Coetzer (born 1961), South African heavyweight boxer