5700 may refer to:
In general A.D. 5700, a year in the 6th millennium CE 5700 BC, a year in the 6th millennium BCE 5700, a number in the 5000 (number) range
Rail GWR 5700 Class, a pannier tank steam locomotive train class Hanshin 5700 series, an electrical multiple unit train series Meitetsu 5700 series, an electric multiple unit train series Tobu 5700 series, a train type from Tobu Railway
Other uses 5700 Homerus, an asteroid Nokia 5700 XpressMusic, a smartphone
See also