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

• Maria Elizabeth Holland (1836–1878), South African botanical artist and plant collector
• Mary Fox, Baroness Holland (1746–1778), British baroness
• Mary Holland Kinkaid (1861–1948), American novelist and journalist

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