A blue note is a musical note played or sung lower than the corresponding note on a major scale.

Blue note may also refer to:

Music The Blue Note (Columbia, Missouri), a rock, jazz, and pop music venue, established in 1980 Blue Note Jazz Club, a chain of music clubs and restaurants, with branches in New York, Tokyo, Nagoya, Rio de Janeiro, São Paulo and Milan Blue Note Jazz Festival, an annual festival in New York hosted by the jazz club, since 2011 Blue Note Records, a record label which focuses on jazz music , a Chicago jazz venue open from 1947 to 1960 , a Parisian jazz venue from 1958 to 1966

Other uses The logo of the St. Louis Blues hockey team Blue note (aviation), the distinctive whine produced by some jet aircraft, as well as the sound of their engines and airframe noise "Blue Note" (Cloak & Dagger), the nineteenth episode and season 2 penultimate of Freeform's live-action show of Marvel's Cloak & Dagger Blue note, movie directed by Andrzej Żuławski from 1991 with Janusz Olejniczak and Sophie Marceau

See also Blue Notes (disambiguation)