57
57 may refer to: 

57 (number)
one of the years 57 BC, AD 57, 1857, 1957, 2057
"57" (song), a song by Biffy Clyro
"Fifty Seven", a song by Karma to Burn from the album Arch Stanton, 2014
"57" (album), a studio album by Klaus Major Heuser Band in 2014
"57 Live" (album), a live double-album by Klaus Major Heuser Band in 2015
Heinz 57 (varieties), a former advertising slogan
Maybach 57, a car
American Base Hospital No. 57
Swift Current 57's, baseball team in the Western Canadian Baseball League
FN Five-Seven, a semi-automatic pistol