GSS may refer to:
Education Garibaldi Secondary School, in Maple Ridge, British Columbia, Canada Government Secondary School (disambiguation) Greenridge Secondary School, in Singapore Grimsby Secondary School, in Ontario, Canada GSS Institute of Technology, in Bangalore, India Gay Student Services, now GLBT Aggies, at Texas A&M University
Government and politics General Security Service (Syria) Global Standards Symposium Civic Alliance of Serbia (Serbian: ), a political party in Serbia Government Statistical Service, of the Government of the United Kingdom Israeli General Security Service, also known as Shin Bet Ghana Statistical Service, of the Government of Ghana
Science General Social Survey Genome survey sequence Gerstmann–Sträussler–Scheinker syndrome Glutathione synthetase Granulomatous slack skin Gudjonsson Suggestibility Scale
Sport Grønlands Seminarius Sportklub, a Greenlandic sport club Gurpreet Singh Sandhu, an Indian footballer Panionios G.S.S., a Greek association football club
Technology Generic Security Services Application Program Interface, an application programming interface for programs to access security services Graph Style Sheets Graph-structured stack Galileo Sensor Station, in satellite navigation
Other uses Croatian Mountain Rescue Service (Croatian: ) Ghost Shadows, a Chinese-American gang Global Supply Systems, a British cargo airline Good Samaritan Society, a Canadian Lutheran service organization Great Singapore Sale, an annual shopping event in Singapore Greek Sign Language Grupo Silvio Santos, a Brazilian holding company Guild of Servants of the Sanctuary, in the Church of England