- Gebr. Alexander
- Alliance Products Mouthpiece manufacturers – suppliers to Besson Musical Instruments
- AMATI – Denak Brasses
- Amrein Musikinstrumente
- John Lynch’s Asymmetric Range Enhancing Trumpet Mouthpieces
- Austin Trumpet Company The Austin Elan Bb is a versitile pro horn equally adept on the stage or in the pit.
- Baroque Trumpet Shop Egger, Naumann, And Tomes Baroque Trumpets And Mouthpieces And Accessories
- Greg Black Mouthpieces
- Blackburn Trumpets Custom Made Trumpets, Mouthpieces, and Louisville Leadpipes
- Boosey And Hawkes
- Brass Sound Creation (Luxembourg)
- Calicchio Trumpets, Trombones, and Accessories
- Jerome Callet Jerome Callet’s site includes information on his custom trumpets, artists, and “Superchops.”
- Carol Brass (Taiwan)
- Chicago Brass Works Custom Made Trumpets
- Antoine Courtois Paris
- Curry Precision Mouthpieces, Sound Sleeve, CCAPS, MEGASLEEVES
- GFT Series Custom Trumpets – Ken Larson’s BrassWerks We sell the GFT Series custom trumpets, leadpipes, tuning slides, repairs, trumpet conversions.
- Edwards Instrument Company
- Blechblas-Instrumentenbau Egger (Egger Brass Instruments) Deutsch
- Eclipse Trumpets, UK,
- Endsley Brass Custom Mouthpieces & Historical Trumpets
- Fasch Instruments
- Fenik’s Trumpets – high-end trumpets, built for and by trumpet players
- Flip Oakes “Wild Thing” Mouthpieces Trumpet, Cornet, Flugel Horn
- FoKus Mouthpieces “A system Of Trumpet Mouthpieces That Lets You Choose The Timbre For The Genre.”
- ex brass GmbH High tech musical instruments
- Freebell:Trumpet-Flugelhorn-Cornet Karl-Albert Kunz
- Galileo Metallblasinstrumente German Brass Instrument Makers – Rotary Valve Trumpets, Jazz Trumpets And Flugelhorns.
- Gary Radtke and GR Technologies GR Mouthpieces
- Getzen Company, Inc.
- Greenhoe Musical Instrument Components Featuring The Greenhoe Rotary Valve For Tenor Or Bass Trombone.
- GW Mouthpieces
- Haagston- Brassinstruments
- Steve Haefner Developed The Haefner Mouthpiece Series in association with Gary Radtke of GR Technologies
- Hammond Design – Makers of Trumpet and Trombone mouthpieces. Promising a brass mouthpiece experience like no other.
- Harrelson Trumpets
- Thomas Inderbinen Blasinstrumentenatelier Handmade Brass And Woodwind
- Kanstul Musical Instruments, Inc.
- Michael Kordick – Instrumentenmachermeister – kunsthandwerklicher Metallblasinstrumentenbau – Handmade Metal Or Brass Wind Instruments High Bb Trumpet, Bb Trumpet, Bb Flugelhorn, Bb Tenor horn, Bb Baritone, And Repairs
- The Laskey Company Trumpet Mouthpieces That Work With You
- Lätzsch Metallblasinstrumente Brasswindinstruments – Trompeten, Posaunen, Trumpets, Trombones
- Lewington – McCann Cornet Mouthpiece
- Josef Lidl The First Czech Musical Instruments Factory in Moravia
- M. Jiracek & Sons Trumpet, Flugelhorns and french horns
- Max Trumpets & Colin Trumpet Mouthpieces
- Clint McLaughlin Fanfare Trumpets Bass Bugles Piccolo Bugles Renaissance Items
- Milashius Brass Instrument Technologies Milashius Mouthpiece – Heavy Bottom Valve Caps
- MMP Brasswind – Classic, Jazz And GigaTone Trumpet Mouthpieces. Manufacturer With Online Shop.
- David G. Monette Corporation
- Musik Lechner Instrumente Fürs Leben – Handgemachte Trompeten
- Musikhaus Beck Beck Handmade Trumpets and Flügel Horns, High Quality Used Instruments, Largest Dealer For Stomvi Trumpets In Germany
- David S. Miller’s “My Slide” Classic Style Bach Tuning Slides
- Najoom Music Products Trumpet & Cornet Mouthpieces, Trumpet Leadpipes, Trumpet Mouthpiece Stabilizers, Trumpet Bottom Caps
- Pickett Brass – Mouthpieces
- Anton Possegger Possegger handgemachte Meisterinstrumente – Orchestertrompete – Konzertflügelhorn
- Michael Rath Handcrafted Trombones
- Rayburn Musical Instruments
- Bob Reeves Brass Online Brass Mouthpieces, Valve alignment, Accessories, and Repairs
- Rudy Muck Mouthpieces
- Karl Schagerl – Musikhaus SCHAGERL Austria Handmade Rotary Valve Trumpets
- Schilke Music Products, Inc.
- Martin Schmidt Meisterwerkstatt für Metallblasinstrumente, Potsdam, Germany – A Small Workshop In Which Brass Instruments Are Produced According To Traditional Methods. Deutsche | English
- Smith-Watkins Brass Custom Built Instruments, Trumpets – Cornets – Flugelhorns
- Ted Sparks’ Musical Services Sparx Cornet Mouthpieces – Sparx Wooden Straight Mutes
- Sterling Musical Instruments Manufacturer of Professional Brass Instruments
- Stork Custom Mouthpieces
- Straub – Trumpets
- Taylor Trumpets
- Max & Heinrich Thein, Bremen Germany – Trumpets, Trombones, Horns, Tubas And Percussion Instruments Deutsch | English |Nihongo
- Bruno Tilz Mouthpieces
- The Trumpetpro – G and H Music and the Haefner Signature Trumpet Mouthpiece Bill Goswick and Steve Haefner, owners.
- Hub VanLaar Trumpets and Flugelhorns
- NEW US Regulation Bugle™ This American Made Bugle, Formerly Made By Rexcraft And Buglecraft Is Used By The U.S. Army And The Boy Scouts Of America.
- Van Cleave Studio Pro Mouthpieces
- Vibrato – trumpets and flugelhorns in Bb. Student, Intermediate and Professional models all supplied with Monel valves and two mouthpieces.
- Metallblasinstrumentenbau Helmut Voigt A Brass Instrument Maker From Markneukirchen/ Germany. Trumpets, Trombones And Historical Brass Instruments E.g. Sackbuts And Renaissance Trumpets
- Warburton Music Products Manufacturer of Quality Brass Instrument Mouthpieces
- Wedge Mouthpieces
- Wedgwood Brass Home Of The “Ovoid” Non-axial Bored Valve – Trumpets, Cornets, Fanfare Trumpets, Wagner Stierhorns
- Weril instruments from Brazil Weril Trumpets – Slide Trumpet – Schafer Pocket Trumpets
- Willson Switzerland – Band and orchestral trumpets. Swiss Custom Trumpets.
- Yamaha Corporation of America Trumpets, Cornets, Fluegelhorns