McGarrity is a surname. Notable people with the surname include:
John McGarrity (1925–2006), Scottish footballer Joseph McGarrity (1874–1940), Irish Republican Kevin McGarrity (born 1973), Northern Irish racing driver Mark C. McGarrity (1943–2002), better known by his pen name Bartholomew Gill, American writer Michael McGarrity (born 1939), American writer Tom McGarrity (1922–1999), Scottish footballer