Complete & Unbelievable: The Otis Redding Dictionary of Soul was the soul legend's 1966 album (and the last issued in his lifetime). The original album features mostly covers on side one and original compositions by Redding on side two.

The album features musical assistance from Booker T. & the M.G.'s-organist Booker T. Jones, pianist/guitarist Steve Cropper, bassist Donald "Duck" Dunn, drummer Al Jackson, Jr.-pianist Isaac Hayes, and the Memphis Horns, consisting of tenor saxophonist Joe Arnold, trumpeter Wayne Jackson, tenor saxophonist Andrew Love and baritone saxophonist Floyd Newman.

The Otis Redding Dictionary of Soul was released in October 1966 on the Stax label and peaked at No. 73 and at No. 5 on the Billboard 200 and the R&B LP charts respectively. The album produced two singles, "Fa-Fa-Fa-Fa-Fa (Sad Song)" and "Try a Little Tenderness." In 2,000 it was voted No. 488 in Colin Larkin's All Time Top 1,000 Albums. In 2012, the album was ranked No. 254 on Rolling Stone magazine's list of The 500 Greatest Albums of All Time.

Cut at 45 RPM, pressed on 180-gram vinyl at Quality Record Pressings, and housed in a tip-on old style gatefold double pocket jacket by Stoughton Printing.