Giger is a surname. Notable people with the surname include:
Albert Giger (1946–2021), Swiss cross-country skier Fabrice Giger (born 1965), Swiss publisher and film producer H. R. Giger (1940–2014), Swiss painter, sculptor, and set designer Paul Giger (born 1952), Swiss violinist and composer Peter Giger (born 1939), Swiss percussionist and bandleader Raoul Giger (born 1997), Swiss footballer Walter Giger (1943–2025), Swiss environmental chemist Werner Giger (1949–1974), Swiss motorcycle racer
See also Geiger Guyger