TCK has several meanings:
- Third Culture Kid, a term in sociology
- Technology Compatibility Kit, a suite of tests related to the Java programming language
- Trinity College, Kandy
- The Cool Kids, a hip hop group
- Tecktonik, a form of dance
- Teck Resources, NYSE stock symbol is TCK
- Twin City Knockers, a Roller Derby Team in Shreveport/Bossier City, LA