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