GLS may refer to: Games, Learning & Society Conference GBAS landing system General Logistics Systems, a Dutch logistics company Generalized least squares General lighting service lamps Genesis Lease, a Bermudan aircraft leasing company Global location sensing Georgetown Leadership Seminar Glaisdale railway station, in England Glasgow Literary Society Global Leaders' Summit Global Linguist Solutions, an American translation company Gloucestershire, England GLS Bank, a German ethical bank GLS University, in Ahmedabad, India Glutaminase gene and enzyme Government Legal Service of the Government of the United Kingdom Gray leaf spot, a fungal plant disease Guided Local Search, a search algorithm Guy L. Steele Jr. (born 1954), American computer scientist Mercedes-Benz GLS-Class (GL-Class prior to 2016), a full-size luxury SUV Scholes International Airport at Galveston, in Texas University of Chicago Graduate Library School