The TK (TK-3) and TKS were Polish tankettes during the Second World War.
TKS may refer to one of the following
- TKS, Polish tankettes during the Second World War
- Turks and Caicos Islands, the country's ISO 3166-1 alpha-3-code
- TKS Ice Protection system, fluid-based airborne ice protection system
- TKS (company), the company producing the TKS ice protection system
- TKS spacecraft, Soviet spacecraft
- Taijin kyofusho syndromes, a Japanese form of social phobia
- 3,5,7-Trioxododecanoyl-CoA synthase, an enzyme
- The King's School, Parramatta, a private school situated in Western Sydney
TKS (Tecalemit-Kilfrost-Sheepbridge Stokes) was a British aerospace manufacturer formed in 1942 to develop an ice protection system that could be compatible with armoured leading edges on military aircraft.