TIS
- 'Tis
- 'Tis the Season (disambiguation)
- Janov (Rychnov nad Kněžnou District)
- TIS Productions
- Taporoporo'anga Ipukarea Society
- Technological innovation system
- Tensilica Instruction Extension
- The International School of Macao
- The International School, Karachi
- Tin Shui Wai station
- Tis (Havlíčkův Brod District)
- Tis u Blatna
- Tis, Iran
- Translation (biology)
- Transparency International Slovakia
- Travelers' information station
- Triisopropylsilane
- Trusted Information Systems
- Truth in sentencing