The Sonata for Solo Violin in D major, Opus 115, is a three-movement work for unaccompanied violin composed by Sergei Prokofiev in 1947. It was commissioned by the Soviet Union's Committee of Arts Affairs as a pedagogical work for talented violin students. It is therefore a non-virtuosic piece, and was originally designed to be played not by one soloist but by multiple young performers in unison. It was not performed until 10 July 1959 - six years after Prokofiev's death - by Ruggiero Ricci at the Moscow Conservatory.