351 (disambiguation)

351 or variation, may refer to:
 * 351 (number), a number in the 300s range
 * AD 351 (CCCLI) a year in the Common Era
 * 351 BC, the year before the common era

Places

 * Area code 351, for telephones for Northeast Massachusetts
 * +351 country code for telephones for Portugal
 * 351 Yrsa, asteroid #351, the 351st asteroid registered, a Main Belt asteroid
 * 351 (building), downtown, St. John's, Newfoundland Island, Newfoundland and Labrador, Canada; an office building
 * List of highways numbered 351 for Route 351

Military and weaponry

 * .351 Winchester Self-Loading ammunition
 * Type 351 Radar
 * 351st Operations Group
 * 351st Division (Imperial Japanese Army)
 * 351st Reconnaissance Aviation Squadron
 * No. 351 Squadron RAF
 * KRI Ahmad Yani, Indonesian navy frigate, pennant number 351
 * TCG Mareşal Fevzi Çakmak, Turkish navy destroyer
 * USS Maurice J. Manuel, WWII U.S. Navy destroyer escort
 * USS Macdonough, WWII U.S. Navy destroyer
 * GERMAN SUBMARINE U-351, WWII German submarine
 * I-351-class submarine, WWII Japanese submarine class

Vehicles and transportation

 * Ford 351 (disambiguation), several engines
 * Peterbilt 351, a truck tractor unit
 * GS&WR Class 351 locomotive
 * 351 (New Jersey bus)

Other uses

 * Japan Airlines Flight 351, a hijacked flight