Gulbis (; feminine: Gulbe or Gulbes) is a Latvian surname, derived from the Latvian word for "swan". Individuals with the surname include:
Harijs Gulbis (1926–2019), Latvian writer and playwright Alvils Gulbis (1936–2021), Latvian basketball player Kristaps Gulbis (born 1967), Latvian sculptor and artist Ritvars Gulbis (born 1980), Latvian curler and curling coach Natalie Gulbis (born 1983), American golfer of Latvian descent Māris Gulbis (born 1985), Latvian basketball player Evan Gulbis (born 1986), Australian cricketer Ernests Gulbis (born 1988), Latvian tennis player
See also Laura Gulbe (born 1995), Latvian tennis player