3440

3440 may refer to:


 * A.D. 3440, a year in the 4th millennium CE
 * 3440 BC, a year in the 4th millennium BCE
 * 3440, a number in the 3000 (number) range

Other uses

 * 3440 Stampfer, an asteroid in the Asteroid Belt, the 3440th asteroid registered
 * Texas Farm to Market Road 3440, a state highway
 * GWR 3700 Class 3440 City of Truro (engine #3440), a steam locomotive preserved at the GWR Museum in Swindon