Hassler (also Haßler, Häßler, Hässler, Hasler, ...) is a toponymic surname derived from a number of places called Hasel or Hassel in German-speaking parts of Europe. Notable people with this name include: Musicians A musical dynasty in Nuremberg Isaak Hassler (c.1530 – 1591), organist and father of three brothers: Kasper Hassler (1562–1618), minor composer and publisher Hans Leo Hassler (1564–1612), an important German composer and organist Jakob Hassler (1569–1622), composer most noted for his keyboard works Johann Wilhelm Hässler (1747–1822), German organist and composer Athletes Nicole Hassler (1941–1996), French figure skater Des Hasler (b. 1961), Australian rugby league footballer and coach Thomas Häßler (b. 1966), former German football player and 1990 World Cup winner Dominic Hassler (b. 1981), Austrian football player Other professions Johann Hasler (b. 1548, died after 1602), Swiss theologian and physician Ferdinand Rudolph Hassler (1770–1845), first US Coast Survey superintendent Friday Hassler (1935–1972), American NASCAR driver Hassler Whitney (1907–1989), American mathematician Herbert "Blondie" Hasler (1914–1987), British Marines officer and later a noted single-handed sailor Rolf Hassler (1914–1984), German neurobiologist Eveline Hasler (b. 1933), Swiss writer Jon Hassler (1933–2008) American novelist for whom is named the Jon Hassler Theater in Plainview, Minnesota Marie Hasler (b. 1948), New Zealand politician Harry Hasler, fictional alter ego of Viktor Giacobbo, one of his most popular satirical figures Otmar Hasler (b. 1953), Prime Minister of Liechtenstein Uwe Hassler(de) (b. 1963), German professor of statistics and econometrics Surnames of Liechtenstein origin German-language surnames