La fille aux cheveux de lin is a musical composition by French composer Claude Debussy. It is the eighth piece in the composer's first book of Préludes, written between late 1909 and early 1910. The title is in French and translates roughly to "The Girl with the Flaxen Hair". The piece is 39 measures long and takes approximately two and a half minutes to play. It is in the key of G♭ major.
The piece, named after the eponymous poem by Leconte de Lisle, is known for its musical simplicity, a divergence from Debussy's style at the time. Completed in January 1910, it was published three months later and premiered in June of that same year. The prelude is one of the most recorded pieces of Debussy's, both in its original version and in subsequent various arrangements.