40 or forty commonly refers to: 40 (number), the natural number following 39 and preceding 41 one of the years 40 BC, AD 40, 1940, 2040
40 or forty may also refer to:
Music 40 (record producer) (born 1983), Canadian hip hop producer (born Noah Shebib) Forty (album), a 2001 live album by Thomas Dolby 40 (Foreigner album), 2017 40 (Stray Cats album), 2019 40 (Sunnyboys album), 2019 40 (Grupo Niche album), 2020 40, an album by Peter Morén 40 (concert video), by the Allman Brothers Band "40" (song), by U2 "40'", a song by Franz Ferdinand from Franz Ferdinand, 2004 "Forty", a song by Karma to Burn from Almost Heathen, 2001 40 Earthshaker album
Other uses 40 ounce or forty, a bottle of malt liquor Forty winks or forty, sleep or nap .40 S&W, pistol cartridge .40 Super, wildcat pistol cartridge (, the ASCII character with code 40 The international telephone code for Romania 40 Harmonia, a main-belt asteroid
See also 40th (disambiguation) Tessarakonteres (English: Forty), a very large ancient Egyptian galley Top 40: a radio format; the current, 40 most-popular songs in the music industry This Is 40, a 2012 American film