GS may stand for:
GSM-R, Global System for Mobile Communications – Railway or GSM-Railway is an international wireless communications standard for railway communication and applications.
Grenzschutzgruppe 9 (GSG 9) (English: Border Protection Group 9) is the elite Police Tactical Unit of the German Federal Police (German: Bundespolizei).
GS1 is a not-for-profit organisation that develops and maintains global standards for business communication.
Glycogen synthase kinase 3 is a serine/threonine protein kinase that mediates the addition of phosphate molecules onto serine and threonine amino acid residues.
In mobile telephony GSM 03.38 or 3GPP 23.038 is a character set used in the Short Message Service of GSM based cell phones.
The GSIS-Meralco case is a political controversy and pending legal case being heard by the Supreme Court of the Philippines.
The principal stock index of the Ghana Stock Exchange or GSE is the GSE Composite Index. This index is calculated from the values of each of the market's listings.
GSF Explorer, formerly USNS Hughes Glomar Explorer (T-AG-193), was a deep-sea drillship platform initially built for the United States Central Intelligence Agency Special Activities Division secret operation Project Azorian to recover the sunken Soviet submarine K-129, lost during April 1968.