Clair de Lune is French for "Moonlight". It may refer to:

• "Clair de lune" (poem), a poem by Paul Verlaine published in the 1869 collection Fêtes galantes
• Clair de Lune, an 1884 short story collection by Guy de Maupassant
• Clair de lune, a 1921 play by Blanche Oelrichs, filmed in 1932
• Claire de Lune, a 1962 novel by Pierre La Mure
• "Claire de Lune", a short story by Steven Millhauser from the 1998 short story collection The Knife Thrower and Other Stories

• "Clair de lune", a piano piece by Debussy, third movement of his Suite bergamasque, L. 75 (1905), inspired by the Verlaine poem
• "Clair de lune", setting of the Paul Verlaine poem by Fauré, from his Two Songs, Op. 46 (1887)
• Clairs de lune, a set of four piano pieces, each titled "Clair de Lune", by Abel Decaux (1907)
• Piano Sonata No. 14, Op. 27, No. 2 (1801), the "Moonlight" piano sonata by Beethoven, known in French as Sonate au Clair de lune

• "Clair de Lune" (song), a 2012 song by Flight Facilities
• "Clair de Lune", a 2015 song by Little Green Cars
• "Clair de Lune", from The Epic by Kamasi Washington

• Claire de Lune (typeface), a typeface by Debriey

• "Au clair de la lune", a French folk song
• Au clair de la lune (film), a 1983 Canadian film directed by Forcier
• By the Light of the Moon (disambiguation)