Lasser or Lässer is a Germanic surname; it may refer to:
David Lasser (1902–1996), US-American science fiction author
Franz-Josef Lässer (born 2001), Austrian para-cyclist
Louise Lasser (born 1939), US-American actress
Mitchel Lasser, American lawyer
Philip Lasser (born 1963), US-American composer, pianist, and music theorist
Robin Lässer (born 1991), German motorcycle racer
Tobías Lasser (1911–2006), Venezuelan botanist
