Glas is a Scottish, Dutch or Low German metonymic surname meaning "glass". Notable people with the surname include:
Arend Glas (born 1968), Dutch bobsledderErich Glas (1897–1973), German-Israeli artistGeorge Glas (1725–1765), Scottish marinerGerrit Glas (born 1954), Dutch professorGotthard Glas, birth name of Uziel Gal (1923–2002), German-born Israeli gun-designerHanna Glas (born 1992), Swedish footballerImke Glas (born 1994), Dutch artistic gymnastJohn Glas (1695–1773), Scottish clergymanJorge Glas (born 1969), Ecuadorian Vice PresidentJürgen Glas (born 1956), German swimmerKonrad Glas (born 1940), German sailorRich Glas, American basketball coachStéphane Glas (born 1973), French rugby playerTyko Gabriel Glas, fictional character in the Swedish novel Doctor Glas (1905)Uschi Glas (born 1944), German film and television actress