303 is a year of the Julian calendar.
303 may also refer to:
303 (number) 303 BC, a year of the pre-Julian Roman calendar Area code 303, a telephone code assigned to central Colorado Roland TB-303, a bass synthesizer .303 British, the .303" calibre rifle and machine-gun cartridge 303 (comics), comic book miniseries by Garth Ennis and Jacen Burrows 303 Josephina, a main-belt asteroid Prometheus (Stargate), also called BC-303 or X-303, fictional spacecraft in the Stargate SG-1 television show 3OH!3, an electropop band from Boulder, Colorado "303", also used in Australia and New Zealand to refer to the Lee–Enfield rifle "303", a song by Kula Shaker from the album K A303 road, a British Highway that is the subject of the Kula Shaker song HTTP 303, a status code for "See other" SOP 303, a National Communications System standard operating procedure to turn off mobile communications 303 (film), a German film 303 (group), a British girl group Pearson 303, an American sailboat design 303 Squadron (disambiguation), several military units BMW 303, a small family saloon