Mark as a surname may refer to:
- Donald Mark (1926-2018), American judge
- Hans Mark (1929–2021), German-born American aerospace engineer
- Heinrich Mark (1911–2004), Estonian politician
- Jacob Mark (born 1991), Danish politician
- Luke Mark, UK musician
- Melissa Mark-Viverito (born 1969), American politician
- Michael Mark (disambiguation), multiple people
- Nellie V. Mark (1857–1935), American physician, suffragist
- Oliver Mark (born 1963), German photographer
- Robert Mark (1917—2010), Commissioner of the Metropolitan Police
- Ronald T. Mark (1898—1958), British military aviator
- Ülar Mark (born 1968), Estonian architect