Olin is an American name of uncertain origin; it is usually explained as a form of Olen or Olan, or as a transferred surname, and it is often linked to the Scandinavian Ole and Olaf, whose Old Norse meaning is "ancestor's heir". Short and sturdy, it fits in with Odin and Colin while sounding like nobody else. Olin reached a best rank of 1495 in 2018 and stands at number 1849 in 2025, with 86 boys given the name.