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 der Bundespolizei (Border Protection Group 9 of the Federal Police), commonly abbreviated GSG 9, is a counter-terrorism, hostage rescue and special operations police unit of the German federal police.
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.
The GSIS-Meralco case is a political controversy and pending legal case being heard by the Supreme Court of the Philippines.
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 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.