3340 may refer to:

A.D. 3340, a year in the 4th millennium CE 3340 BC, a year in the 4th millennium BCE 3340, a number in the 3000 (number) range

Other uses 3340 Yinhai, an asteroid in the Asteroid Belt, the 3340th asteroid registered IBM 3340, a hard disk drive Texas Farm to Market Road 3340, a state highway

See also