TASS or Tass may refer to:
- Telluride Association Sophomore Seminar, a six-week educational opportunity for minority high school students
- Telegraph Agency of the Soviet Union, TASS is the transliteration of the Russian abbreviation for it
- ITAR-TASS, the Information Telegraph Agency of Russia
- The Technical, Administrative and Supervisory Section, a former British trade union
- TASS (software), a Usenet newsreader
- Towed array sonar system, US Navy
- Tactical Automated Security System
- Toxic Anterior Segment Syndrome, an inflammation in the eye's interior
- Turbo Assembler, popular assemblers for the Commodore 64 and the PC
- Tass River, New Zealand
- Tass Times in Tonetown, a video game
- Tass, Hungary, a village in Hungary
- Trading Advisor Selection System, commonly referred to as Lipper TASS, a hedge fund database for accredited investors
- XML Trust Assertion Service Specification (X-TASS)
- In the Scots language, a cup or goblet, especially for spirits