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).
Glycogen synthase kinase 3 is a serine/threonine protein kinase that mediates the addition of phosphate molecules onto serine and threonine amino acid residues.
GS1 is a not-for-profit organisation that develops and maintains global standards for business communication.
In mobile telephony GSM 03.38 or 3GPP 23.038 is a character encoding used in GSM networks for SMS (Short Message Service), CB (Cell Broadcast) and USSD (Unstructured Supplementary Service Data).
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.
GSM frequency bands or frequency ranges are the cellular frequencies designated by the ITU for the operation of GSM mobile phones and other mobile devices.