Mary Holland (disambiguation)

Mary Holland (born 1985) is an American actress and comedian.

Mary Holland may also refer to:
 * Mary Holland (activist) (before 1900–after 1940), Irish anti-treaty supporter
 * Mary Holland (journalist) (1935–2004), Irish journalist
 * Mary Holland, English actress, played "Katie" in many Oxo commercials (1958–76)
 * Mary A. Gardner Holland (before 1840–after 1898), Union nurse during the American Civil War
 * Mary E. Holland (1868–1915), American detective and fingerprint expert
 * Mary Jane Holland (c. 1840–after 1858), first love of George Armstrong Custer
 * "Mary Jane Holland", song by Lady Gaga from her 2013 album Artpop