- TRF -- Tri-Ah-Logy
- Tri Atma -- Tri Bowl Nuts
- Tri Ceratops -- Tri-dim/Jim O'Rourke/Barry Guy
- Tri Fecta -- Tri-O
- Tri O 'Trang -- Tri-Pod
- Tri-Polar -- Tri-State
- Tri State Conspiracy -- Tri Tip Trio
- Tri-Tones Stardusters -- Tria Pedia
- Tria Smith -- Triad (Jazz)
- Triad Nuance -- Triade
- Triage -- Trial Kennedy
- Trial of the Bow -- Trialogo
- Trials -- Triana Pura
- Trianam -- Triangle
- Triangle Below Canal Street -- Triangle Orchestra
- Triangle Park -- TriangleMan
- Triangle's Edge -- Triangulo Caraiva
- Triángulo de Amor Bizarro -- Triantafilos
- Triarchy -- Tribà