TGS is a three-letter acronym which may refer to:
Educational establishments Tadcaster Grammar School, North Yorkshire, England Takapuna Grammar School, Auckland, New Zealand The Geneva School, Winter Park, Florida Thetford Grammar School, Norfolk, England Think Global School, New York City, United States The Graduate School at Northwestern University. Illinois Tiffin Girls' School, Kingston upon Thames, England Tonbridge Grammar School, Tonbridge, England Toowoomba Grammar School, Toowoomba, Australia Tottenham Grammar School, London, England Townsville Grammar School, Townsville, Australia Trinity Grammar School, Melbourne, Australia Trinity Grammar School, Sydney, Australia
Companies TGS Management, American quantitative hedge fund Transportadora de Gas del Sur, a Southern Natural Gas Transportation Company in Argentina TGS-NOPEC Geophysical Company, a Norwegian geoscience data, software and service provider Turkish Ground Services, Ground Handling subsidiary of Turkish Airlines
Computing The Great Giana Sisters
Media Teen Girl Squad, a subcartoon from the Homestar Runner website cartoons Tokyo Game Show, a video game trade show held in Tokyo Taipei Game Show, a video game trade show held in Taipei Toulouse Game Show, a video game trade show held in Toulouse, France The Gathering Storm (novel), by Robert Jordan, of the Wheel of Time series The Gamer Studio, a video gaming website. The Girlie Show (fictional show), a fictional show in the television series 30 Rock The Greatest Showman, a 2017 musical film The Glass Scientists, an independent webcomic
Music The Glorious Sons, a Canadian rock band Tokyo Girls' Style, a Japanese girl group
Places
Tigaraksa railway station, a railway station in Tangerang Regency, Banten, Indonesia
Science Triglycine sulfate, a material used in infrared sensors Transcriptional gene silencing, a type of gene expression regulator