Tiv or TIV may refer to:
- Tiv people, an ethnic nation in West Africa
- Tiv language, an ethno-linguistic group in West Africa
- Time-invariant system
- Tornado Intercept Vehicle
- Turbine Installation Vessel
- T-IV mine, a Soviet anti-tank mine
- Fokker T.IV, a Dutch torpedo bomber/maritime reconnaissance floatplane
- Tivat Airport's IATA airport code
- Triangle Inequality Violation, phenomenon found in Internet delay
Read more about Tiv: People With The Name