- Thinking Plyers -- Thinkman
- Thinkstandard -- Thinner
- Thinner's Dish -- Third
- Third Age -- Third Border
- Third Border -- Third Coast Kings
- Third Coming -- Third Degree Burnz
- Third Degree East -- Third Ear Experience
- Third Eclipse -- Third Eye
- Third Eye Blind -- Third Eye Communications
- THIRD EYE CONVENTION -- Third Face
- Third Face -- Third Grade
- Third Grade Haters -- Third I Vision
- Third Impulse -- Third Lobby
- Third Man House Band -- Third of Never
- Third Option -- Third Position Trio
- Third Quadrant -- Third Realm
- Third Road Home -- Third Stone Sound
- Third Sunday Band -- Third Voice
- Third Wave -- Third World
- Third World All Stars -- Third World Villianz
- Third World War -- Thirdrail Vic
- Thirdstage -- Thirsin Howl III
- Thirst -- Thirstin' Howl