TGS

TGS is a three-letter acronym which may refer to:

Educational establishments

* Governor's School of Texas
* The Graduate School at Northwestern University
* Tadcaster Grammar School, a secondary school in North Yorkshire, England

Companies

* Transportadora de Gas del Sur, a Southern Natural Gas Transportation Company in Argentina

Computing

* Template Graphics Software, acquired by Mercury Computer Systems; see Open Inventor
* The Great Giana Sisters

Media

* Taipei Game Show, a video game trade show held in Taipei.
* Teen Girl Squad, a subcartoon from the Homestar Runner website cartoons.
* TeleGiornale di Sicilia, a regional Sicilian TV station.
* Tokyo Game Show, a video game trade show held in Tokyo.
* TGS with Tracy Jordan, formerly called "The Girlie Show", a show-within-the-show on "30 Rock".