Mortimer is an English surname.

Mortimer may also refer to:

• Mortimer (given name)

• Mortimer, a name sometimes given to the Grim Reaper (see Death (personification)), with its origin in the Latin word morti (to die)
• Mortimer Mouse, a Disney character
• Mortimer Snerd, a character developed by Edgar Bergen
• Mortimer Brewster, main character in Arsenic and Old Lace
• Mortimer "Mort", the eponymous protagonist of Terry Pratchett's novel Mort and its stage play adaptation
• Mortimer Delvile, one of the protagonists in Cecilia (Burnley novel)
• Mortimer Folchart, a character in Cornelia Funke's Inkheart series of fantasy books
• Mortimer, a Robert Munsch character and story
• Mortimer, a fictional criminal in Italian comic book Zagor
• Mortimer Chauncey "Morty" Smith, Sr., one of the title characters on the American animated series Rick and Morty
  • Alternative versions of Mortimer Smith, from alternate realities, including Oni Press' Rick and Morty comic series
• Uncle Mortimer, a theme park mastermind from the video games Thrillville and Thrillville: Off the Rails.
• Phillip Mortimer, one of the protagonists from the Blake and Mortimer comic book series

• Baron Mortimer, a title in the Peerage of England
• Baron Mortimer of Wigmore, two titles in the Peerage of England
• Mortimer Community College, a coeducational secondary school in South Shields, Tyne and Wear, England

• Earl of Oxford and Earl Mortimer, a title in the Peerage of Great Britain
• Mortimer West End, Hampshire, England, a village and civil parish
• Cleobury Mortimer, Shropshire, England, a small town and civil parish
• Stratfield Mortimer, Berkshire, England, a village
• Mortimer's disease, a skin disease
• Ruy Lopez, Mortimer Trap, a chess opening trap

This disambiguation page lists articles associated with the title Mortimer.
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