Gasso and Gassó are surnames. Notable people with the name include:
Blanca de Gassó y Ortiz (1846–1877), Spanish writer and poet DJ Gasso (born 1995), American softball coach Dominic Gasso (born 2003), American soccer player Leopolda Gassó y Vidal (1851–1885), Spanish writer and painter Patty Gasso (born 1962), American softball coach
See also Halenia taruga-gasso, species of plant in the Gentianaceae family