Samuel or Sam Martin may refer to:

  • Samuel Martin (planter) (1694–1776), planter and politician in Antigua
  • Samuel Martin (Secretary to the Treasury) (1714–1788), British politician and administrator
  • Sir Samuel Martin (politician) (1801–1883), Anglo-Irish politician and judge
  • Samuel Martin (writer) (1810–1848), New Zealand land claimant, magistrate, journalist and writer
  • Samuel Martin (entrepreneur) (born 1984), British entrepreneur
  • Samuel Martin (missionary), American Presbyterian missionary
  • Samuel E. Martin (1924–2009), linguist (Korean and Japanese) and designer of the Yale Romanization for Korean
  • Samuel Soler Martín (born 1979), Paralympic swimmer from Spain
  • Sam Martin (singer) (born 1983), American singer and songwriter
  • Sam Martin (speedway rider) (born 1989), Australian speedway rider
  • Sam Martin (American football) (born 1990), American football player
  • Sam Martin, lead singer of the band Youngblood Hawke
  • Samuel Martin (runner) (born 1906), American middle-distance runner, 3rd in the 880 yards at the 1929 USA Outdoor Track and Field Championships<!-- http://trackfield.brinkster.net/Profile.asp?ID=15000 -->