"Mr. Blue" is a popular song written by DeWayne Blackwell that was a hit for The Fleetwoods, reaching #1 on the Billboard Hot 100 in November 1959 and giving the group its second chart-topping hit of the year.
- The song was covered in 1959 by David Macbeth, whose version reached #18 on the UK Singles Chart, spending one week in the Top 20.
- Also in 1959, the song was covered by former boxer and future actor Mike Preston who peaked at #12 and spent five weeks in the Top 20 with the song. The single's B-side is a cover of the Frankie Avalon song "Just Ask Your Heart".
- In 1969, the song was covered by Classics IV on their album, Traces (Imperial 12429).
- In 1974, the song was covered by Italian singer Mina for her album Baby Gate
- In 1975, the song was covered by David Bromberg on his album, Midnight on the Water (Columbia CK 57309).
- Country singer Garth Brooks covered the song for his 1990 album, No Fences.
- Bob Dylan and The Band recorded the song in 1967, released in 2014 on The Bootleg Series Vol. 11: The Basement Tapes Complete.