Giza or Giża is a Polish surname that originated as a nickname literally meaning pork or beef hind leg. Archaic feminine forms: Gizina (by husband), Gizanka (by father). Notable people with the surname include:
Abelard Giza (born 1980), Polish comedian, writer, filmmaker, and actor
Barbara Giza (1550–1589), Polish mistress
Hanna Maria Giza (born 1948), Polish radio journalist, film and stage actress
Jakub Giża (born 1985), Polish shot putter
Piotr Giza (born 1980), Polish footballer