Rainbow Sign is a studio album containing original compositions by American jazz musician Ron Miles on the label Blue Note Records.

Released on October 9, 2020 to positive critical reviews, it is Miles' final studio album, coming two years prior to his death in March 2022.

The sessions reunited him with the musicians who played on his previous album I Am a Man, including longtime collaborator Bill Frisell on guitar and drummer Brian Blade.

[1][2] The editorial staff of AllMusic Guide gave the album four out of five stars, with reviewer Thom Jurek noting how Miles blends "polytonal modal music, blues, gospel, post-bop, and pop".

[9] Writing in Financial Times, Mike Hobart also scored Rainbow Sign four out of five stars for the "clean lines, close-knit interplay and an understated pulse" on the album.