Cunniff is a surname. Notable people with the surname include:
Brandon Cunniff (born 1988), American baseball player David Cunniff (born 1970), American ice hockey player Jill Cunniff (born 1966), American musician John Cunniff (1944–2002), American ice hockey coach M. G. Cunniff (1875–1914), American politician
See also Cunniffe