Happy Reunion is an album by American pianist, composer and bandleader Duke Ellington recorded in 1956 and 1958 but not released on the Doctor Jazz label until 1985.

[1] The album features two small group sessions led by Ellington and recorded in Chicago.

[2] The Allmusic review by Scott Yanow stated: "A particular highlight is hearing Gonsalves play 31 choruses on "Diminuendo and Crescendo in Blue" in this setting".

[3] All compositions by Duke Ellington except where noted