3100 may refer to:
In general A.D. 3100, a year in the 4th millennium CE 3100 BC, a year in the 4th millennium BCE 3100, a number in the 3000 (number) range
Other uses 3100: Run and Become (film), a 2018 documentary film about runners 3100 Zimmerman, an asteroid in the Asteroid Belt, the 3100th asteroid registered Hawaii Route 3100, a state highway Chevrolet 3100, a truck Nokia 3100, a cellphone Southern Pacific 3100, a diesel-electric locomotive on display at the Southern California Railway Museum
See also
3100 series (disambiguation) including '3100 class'
310 (disambiguation)