343 (disambiguation)

343 may refer to:


 * 343, a year of the Christian or Common Era
 * 343 BC, the year
 * 343 (number), the integer represented by the English-language numeral "three hundred and forty-three"

Vehicles

 * Three Forty Three, a New York City fireboat
 * Volvo 343, a small family car
 * Fiat 343, a bus

Other uses

 * 343 Guilty Spark, a fictional character from the Halo franchise
 * 343 Industries, a Microsoft video game studio responsible for the Halo franchise, named after this character
 * Area code 343, a phone number area code for Ottawa, Ontario, Canada
 * Highway 343, a list of highways numbered 343
 * 343, a group of women behind the Manifesto of the 343
 * Asteroid 343, see 343 Ostara