Gass is a surname. Notable people with this surname include:
A. J. Gass (born 1975), Canadian football player
Bob Gass, American-based Irish Christian pastor, broadcaster and author
Charles George Gass (1898–1977), Royal Air Force officer, gunner ace in World War I
Elizabeth Gass, Lady Gass (born 1940), Lord Lieutenant of Somerset, England
Floyd Gass (1927–2006), American football and basketball player, coach, and college athletics administrator
Ian Graham Gass (1926–1992), British geologist, Professor of Earth Sciences at the Open University
Jack Gass, 19th century American professional football player
John Bradshaw Gass (1855–1939), British architect and artist
John Donald MacIntyre Gass (1928–2005), Canadian-American ophthalmologist
Karl Gass (1917–2009), German documentary filmmaker
Kyle Gass (born 1960), American rock musician, singer-songwriter and actor
Melbourne Gass (born 1938), Canadian businessman and former politician
Sir Michael Gass (1916–1983), British colonial administrator
Nabo Gass (born 1954), German painter and glass artist
Octavius D. Gass (1824-1924), American prospector and rancher
Patrick Gass (1771–1870), U.S. Army sergeant, member of the Lewis and Clark Expedition
Robert Gass (born 1948), American musician and member of the bands Bead Game and the Freedom Express
Sir Simon Gass (born 1956), British diplomat
Thomas Gass (born 1963), Swiss scientist and economist, United Nations Assistant Secretary-General for Policy Coordination and Inter-Agency Affairs
Wilhelm Gass (1813–1889), German theologian
William H. Gass (born 1924), American novelist, short story writer, essayist, critic, former philosophy professor
