Passmore is a surname. Notable people with the surname include:
Deborah Griscom Passmore (1840–1911), botanical illustrator for the U.S. Department of Agriculture George Passmore (born 1942), of the artists Gilbert and George George Passmore (lacrosse) (1889–1952), American lacrosse player John Passmore (1914–2004), Australian philosopher John Passmore (artist) (1904–1984), Australian artist Lori Passmore, Canadian/British scientist Matt Passmore (born 1973), Australian actor Norman Passmore (1915–2003), American football coach Rhianon Passmore (born 1972), British politician Steve Passmore (born 1973), Canadian former professional ice hockey goaltender Tim Passmore (born 1959), British police and crime commissioner Todd Passmore (born 1970), better known as Barry Houston, American semi-retired professional wrestler Walter Passmore (1867–1946), English singer and actor William L. Passmore (1910–2002), American jockey and horse trainer William T. Passmore (1882–1955), American lacrosse player William Passmore (boxer) (1915–1986), South African boxer