18000 may refer to:
Railway vehicles
British Rail 18000 - a prototype gas turbine-electric locomotive built for British Railways in 1949 Tokyo Metro 18000 series - an electric multiple unit train type TCDD DE18000 - a type of diesel-electric locomotive built for Turkish State Railways
Other
ISO/IEC 18000 - an international standard that describes RFID technologies 18,000 BCE - a year in pre-history 18,000 - a number 18000 - a minor planet Unit 18000 - Division of the Quds Force