TV3 may refer to:
- Canal 3, a title use in most Romance languages, Norwegian and Swedish as a third television channel.
- TV3 (Cambodia)
- TV3 (Catalonia)
- TV3 (Denmark)
- TV3 Viasat (Estonia)
- TV3 (Hungary)
- TV3 (Ireland), now known as Virgin Media One
- TV3 Viasat (Latvia)
- TV3 Viasat (Lithuania)
- TV3 (Malaysia)
- TV3 (New Zealand), now known as Three
- TV3 (Norway)
- TV3 (Slovenia)
- TV3 (Sweden)
- TV3 (Russia)