"Das Veilchen", K. 476, is a song for voice and piano by Wolfgang Amadeus Mozart, written in Vienna on 8 June 1785, to a poem by Johann Wolfgang von Goethe.

The Köchel catalogue is a chronological catalogue of compositions by Wolfgang Amadeus Mozart, originally created by Ludwig Ritter von Köchel, in which the entries are abbreviated K. or KV. Its numbers reflect the ongoing task of compiling the chronology of Mozart's works, and provide a shorthand reference to the compositions.