TGS

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

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

Science

 * Triglycine sulfate, a material used in infrared sensors
 * Transcriptional gene silencing, a type of gene expression regulator