Publishers – T
- Taiga Press
- Taigh na Teud
- Tall & Small
- Tape Op
- Tapspace Publications
- Tara Publications
- Tastenzauber Musik Verlag
- Taylor & Francis
- Team World Music
- Technote
- Tecla Editions
- Tezak edition
- Thames
- The Brass Press
- The Sound Shop
- The Walsh Collection
- Theodore Presser Company
- Thin Man Press
- Third Party Orchestra
- This Day In Music
- Thomastik-Infeld Vienna
- Thomi Berg
- Thorogood
- Thorpe Music
- Tie Studio
- Tierolff Muziekcentrale
- Tim Knight Music
- Timbre Publications
- Time Square Publishing
- Tin Pan Alley Music Co
- Tiny Goat Films
- Tipbook Company
- Toccata Music
- Tonger Musikverlag
- Tonos
- Top Musik
- Transcontinental Music Publications
- Travis and Emery
- Trend Media Events
- Trinity College London
- Triplo Press
- Tritone Press & Tenuto Publications
- TRN Music
- TRO - The Richmond Organization
- True Fire
- Trumpet Multimedia
- Try Publishing
- Tuba-Euphonium Press
- Tumi Productions
- Turnaround Press
- Tuscany Publications
- Tutor Publications
- Tuttle Publishing
- Twin Elm Publishing