ZGS
ZGS may refer to:

 Zero Gradient Synchrotron – particle accelerator at Argonne National Laboratory, in operation 1964-79
 Zimbabwe Geological Survey
 ZGS Communications, a United States broadcasting company
 Chinese Sign Language, from name in Mandarin, Zhōngguó Shǒuyǔ. La Romaine Airport, with IATA code ZGS