383

383 most commonly refers to:
 * 383 (number), the natural number following 382 and preceding 384.
 * AD 383, a year
 * 383 BC, a year

383 may also refer to:

Astronomy

 * 383 Janina, a Themistian asteroid
 * Abell 383, a galaxy cluster
 * HOPS 383, a class 0 protostar
 * NGC 383, a double radio galaxy

Buildings

 * 383 Madison Avenue, an office building in New York City, United States
 * Stalag 383, a German WW2 prisoner of war camp

Manuscripts

 * Minuscule 383, a Greek manuscript of the New Testament

Flights and routes

 * American Airlines Flight 383 (1965), a Boeing 727 which crashed on approach to Cincinnati
 * American Airlines Flight 383 (2016), a Boeing 767 which caught fire leaving Chicago O'Hare airport
 * List of highways numbered 383

Engines

 * Chrysler 383 B engine

Watercraft

 * BRP Ismael Lomibao (PC-383), a Jose Andrada-class coastal patrol boat
 * KRI Imam Bonjol (383), a Parchim-class corvette
 * USS City of Lewes (SP-383), an American minesweeper and patrol vessel
 * USS Pampanito (SS-383), a Balao-class submarine
 * USS Surfbird (AM-383), an Auk-class minesweeper

Weapons

 * Bersa Model 383a, an Argentinian small semi-automatic pistol