Three Pieces for Solo Clarinet is a solo instrumental work by Igor Stravinsky. The work was composed in 1918. It was published in 1919, shortly after the completion of his Suite from L'Histoire du Soldat, as a thank-you gift to the philanthropist and arts patron Werner Reinhart, who was also an amateur clarinetist. The Three Pieces is perhaps the most well-known work for unaccompanied clarinet in the repertoire. It is also notable for being one of the few clarinet solo pieces that calls for clarinets in both B♭ and A.