The following are lists of makers of clarinets, clarinet mouthpieces, clarinet ligatures, and clarinet reeds. Note that some of the following are simply brands for instruments from original equipment manufacturers.
| Brand | Piccolo | Sopranino | Soprano | Basset clarinet | Basset horn | Alto | Bass | Contra-alto | Contrabass | |
|---|---|---|---|---|---|---|---|---|---|---|
| Amati-Denak | E♭ | C, B♭, A, G | E♭ | B♭ | ||||||
| Backun Musical Services | B♭, A | A (also joints in A)[1] | B♭ | |||||||
| E. K. Blessing | B♭ | |||||||||
| Buffet Crampon | E♭, D | C, B♭, A | A | F | E♭ | B♭ | EE♭ | |||
| Benedikt Eppelsheim | BB♭ | |||||||||
| Dietz Klarinettenbau | G | E♭, D | C, B♭, A, G | B♭, A | F | E♭ | B♭ | |||
| Stephen Fox | E♭, D | C, B♭, A, G | C, B♭, A, G (also joints and joint conversions in C, B♭, A) | F | B♭, A (projected) | |||||
| Hanson Clarinet Company | B♭, A | |||||||||
| Howarth of London | B♭, A | A (joints & barrels only) | ||||||||
| Jupiter Band Instruments | B♭ | B♭ | ||||||||
| Leblanc (a division of The Selmer Company) | B♭ | E♭ | B♭ | EE♭ | BB♭ | |||||
| Leitner & Kraus | E♭, D | C, B♭, A | B♭, A | F | B♭ | |||||
| Orsi Instrument Company | G, A♭ (on request) | E♭ | C, B♭, A, G | F (on request) | E♭ | B♭ | ||||
| Fratelli Patricola | E♭ | C, B♭, A | ||||||||
| Luis Rossi | D | C, B♭, A | ||||||||
| L. A. Ripamonti | A♭ | E♭ | C, B♭, A | B♭ | BB♭ | |||||
| W. Schreiber (division of Buffet Crampon Germany) | C, B♭, A | |||||||||
| Schwenk & Seggelke | G, A♭ | E♭, D | C, B♭, A | B♭, A | F | |||||
| Selmer | E♭ | B♭, A | F | E♭ | B♭ | EE♭ | BB♭ | |||
| F. Arthur Uebel | E♭ | C, B♭, A | A | B♭; | ||||||
| Herbert Wurlitzer | G | E♭, D | C, B♭, A | B♭, A | F | E♭ | B♭ | |||
| Yamaha Corporation | E♭ | B♭, A | E♭ | B♭ |