Nathaniel "Nat" Adderley Jr. (born May 23, 1955) is an American pop and rhythm and blues music arranger and pianist who spent much of his music career arranging as music director for Luther Vandross tours and contributed as co-songwriter on most of Vandross's albums. His father Nat Adderley (1931–2000) was a composer and jazz cornet and trumpet player, while his uncle Cannonball Adderley (1928–1975) was a jazz alto saxophonist.