"Don't Let Me Down" is a song by The Beatles, recorded in 1969 during the Get Back (Let It Be) sessions. Richie Unterberger of All Music Guide called it "one of the Beatles' most powerful love songs", and Roy Carr and Tony Tyler called it "a superb sobber from misery-expert J. W. O. Lennon, MBE. And still one of the most highly underrated Beatle underbellies."

An anguished love song Lennon wrote to Yoko Ono, Paul McCartney interpreted it as a "genuine plea", with Lennon saying to Ono, "I'm really stepping out of line on this one. I'm really just letting my vulnerability be seen, so you must not let me down." Lennon's vocals work their way into screams, presaging the primal scream stylings of the following year's John Lennon/Plastic Ono Band album.

The song is in the key of E and is in 4/4 time during the verse, chorus and bridge, but changes to 5/4 in the pickup to the verse.

"Don't Let Me Down" is a pop song written by Richard Stannard, Julian Gallagher, D. Morgan, Will Young and Simon Hale, and performed by Will Young. It was released as his fourth single, along with the track "You and I". It reached number two in the UK Singles Chart.

The double A-side single was released in aid of Children in Need. CD2 included a limited edition poster.

"Don't Let Me Down" by Robert & Richard Sherman is a song from the 1971, Walt Disney musical film Bedknobs and Broomsticks. It is sung by Angela Lansbury in reply to David Tomlinson's "sales pitch" song, "Eglantine" where Tomlinson begs Lansbury to join his magic act. The song is often cut from TV presentations of the film.