203 is a year.
203 may also refer to:
203 BC 203 (number) AS-203, an uncrewed flight of the Saturn IB rocket on July 5, 1966 AK-203, an assault rifle Hill 203, a high ground located in Lushunkou District, Dalian, Liaoning Province, China MAZ-203, a bus UFC 203, a mixed martial arts event produced by the Ultimate Fighting Championship VMAT-203, a squadron in the United States Marine Corps that trained naval aviators to fly the AV-8B Harrier 203 series, an electric multiple unit train type Peugeot 203, a family car VFA-203, a Strike Fighter Squadron of the U.S. Naval Reserve Room 203, an American horror film MP-203, an unfinished motorway in Madrid, Spain that connects from Mejorada del Campo to San Fernando de Henares JWH-203, an analgesic chemical from the phenylacetylindole family 203 Pompeja, a large main asteroid belt
See also 203rd (disambiguation) Flight 203 (disambiguation) List of highways numbered 203 Proposition 203 (disambiguation)