TIS, Tis or Tis may refer to:

Companies/Organisations TIS Productions, a Colombian television production company commonly called TIS and previously known as Fox TeleColombia and TeleColombia Taporoporo'anga Ipukarea Society, an environmental NGO based in the Cook Islands Transparency International Slovakia, an anti-corruption non-governmental organization Trusted Information Systems, a former computer security research and development company The International School of Macao, a Canadian international school in Macao

Places Tis (Havlíčkův Brod District), a municipality and village in the Czech Republic Tis u Blatna, a municipality and village in the Czech Republic Tis, a village and part of Janov (Rychnov nad Kněžnou District) in the Czech Republic Tis, Iran, a village

Other uses Polikarpov TIS, Soviet prototype heavy fighter Tin Shui Wai station (MTR station code TIS), Hong Kong Travelers' information station, providing information by radio to motorists Truth in sentencing, policies on criminal sentencing 'Tis, a 1999 memoir by Frank McCourt Tis, In molecular biology and genetics translation initiation site Triisopropylsilane, or TIS, a hydrosilane Technological innovation system Tensilica Instruction Extension, a proprietary language for customizing Tensilica's Xtensa processors

See also 'Tis the Season (disambiguation)