GS2 may be a shorthand reference to:
In technology Samsung Galaxy S II, smartphone Samsung Gear S2, smartwatch Blue Origin New Glenn stage 2, space launch rocket upper stage
In video games Galactic Civilizations II Golden Sun: The Lost Age Phoenix Wright: Ace Attorney − Justice for All, known in Japan as Gytakuten Saiban 2
Other uses GS-II (1,3-beta-glucan synthase), an enzyme
See also
GS (disambiguation) GSS (disambiguation)