FGS

FGS may refer to:


 * Faculty of Graduate Studies
 * Federal German Ship, NATO designation for German Navy ships
 * Federal Government of Somalia
 * Federation of Genealogical Societies
 * Fellow of the Geological Society (F.G.S.)
 * FG syndrome
 * Fine guidance sensor
 * Fine Guidance Sensor (HST), FGS for the Hubble Space Telescope
 * Flagstaff railway station
 * Fluorescence guided surgery
 * Fo Guang Shan, a Buddhist monastic order
 * Full genome sequencing
 * Geranylfarnesyl diphosphate synthase
 * Functional Gen Set, see Pathway analysis