There are many kinds of clarinets.
Tiny Clarinets Edit
Bb Sopranino Clarinet - Obsolete.
A Sopranino Clarinet- Obsolete.
Small Clarinets Edit
Bb Soprano Clarinet- The most common one.
C Clarinet- Obsolete.
A Clarinet- Obsolete.
G Clarinet- Obsolete.
Medium-Small Clarinets Edit
Basset clarinet — A soprano clarinet with a range extension to low C (written)
A basset clarinet — Most common type.
Basset clarinets in C, B♭, and G also exist.
C basset clarinet - Obsolete.
Bb basset clarinet - Obsolete.
G basset clarinet - Obsolete.
Medium Clarinets Edit
Alto clarinet — Pitched a perfect fifth lower than the B♭ alto clarinet.
E♭ alto clarinet — Most common type. Range usually down to low E♭ (written)
Large Clarinets Edit
Bass Clarinet Edit
Bass clarinet — An octave below the B♭ clarinet often with an extended low range (to low E♭ )
B♭ bass clarinet — The standard bass.
A bass clarinet — Very rare.
C bass clarinet — Obsolete.
Contra-alto clarinet — An octave below the tenor clarinet.
(EE♭ contra-alto clarinet)
Contrabass clarinet — An octave below the bass clarinet
(BB♭ contrabass clarinet)
Really Large Clarinets Edit
EEE♭ octocontra-alto- An octave below the contra-tenor clarinet. Only three have ever been built.
BBB♭ octocontrabass - An octave below the contrabass clarinet. Only one was ever built.
Weird Clarinets Edit
Basset horn — Alto-to-tenor range instrument with (usually) a smaller bore than the alto clarinet, and a range extended to low (written) C.
F basset horn - Most common type, but- Obsolete.
G basset horn - Obsolete.
D basset horn - Obsolete.