.357 may refer to:
*
.357 Magnum, a firearm cartridge (revolver)
*
.357 SIG, a firearm cartridge (pistol)
*
.357 Maximum, a wildcat firearm cartridge (revolver)
*
.357/44 Bain & Davis, a wildcat firearm cartridge (pistol)
*
.357 Peterbilt, a wildcat firearm cartridge (pistol)
*
.357 Super Magnum, a wildcat firearm cartridge (revolver)
See also
*
.38 caliber
*
9 mm caliber
{{Number disambiguation