TQ or tq may stand for:
- the IATA code for Tandem Aero airline
- TQ Digital Entertainment, a Chinese computer game developer
- Techniquest, a collection of science and discovery centres in Wales
- TQ (singer), Terrance Quaites, an American R&B singer
- Télé-Québec, or TQC
- ThinkQuest, a student webpage building competition
- Titan Quest, an action role-playing computer game
- TQ postcode area, a United Kingdom postcode for the area of Torquay
- Technical Query
TQ may also refer to:
- A military colloquialism for Al Taqaddum Airbase, Iraq
- TQ Thank you, a term used in text speak