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 | 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] | ||||||
| E. K. Blessing | B♭ | |||||||
| Buffet Crampon | E♭, D, C, B♭, A | A | F | E♭ | B♭ | E♭ | ||
| Benedikt Eppelsheim | B♭ | |||||||
| Dietz Klarinettenbau | high 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 (division of Conn-Selmer) | A♭ | E♭, D, C, B♭, A | A | F | E♭ | B♭ | E♭ | B♭ |
| Leitner & Kraus | E♭, D, C, B♭, A | B♭, A | F | B♭ | ||||
| Orsi Instrument Company | G, A♭ (on request; soprano?) | E♭, C, B♭, A, G | F (on request) | E♭ | B♭ | |||
| Fratelli Patricola | E♭, C, B♭, A | |||||||
| Luis Rossi | D, C, B♭, A | |||||||
| W. Schreiber (division of Buffet Crampon Germany) | B♭, C, A | |||||||
| Schwenk & Seggelke | G, A♭ | E♭, D, C, B♭, A | B♭, A | F | ||||
| Selmer (division of Conn-Selmer) | B♭ | E♭ | B♭ | B♭ | ||||
| F. Arthur Uebel | E♭, | C, B♭, A | A | B♭ | ||||
| Herbert Wurlitzer | high G, E♭, D, C, B♭, A | B♭, A | F | E♭ | B♭ | |||
| Yamaha Corporation | E♭, B♭, A | E♭ | B♭ |