Giger is a surname. Notable people with the surname include:
Albert Giger (born 1946), Swiss cross-country skierFabrice Giger (born 1965), Swiss publisher and film producerH. R. Giger (1940–2014), Swiss painter, sculptor, and set designerPaul Giger (born 1952), Swiss violinist and composerPeter Giger (born 1939), Swiss percussionist and bandleaderWalter Giger (born 1943), Swiss environmental chemistWerner Giger (1949–1974), Swiss motorcycle racer