4000 series (disambiguation)
# 4000 series (disambiguation)

4000 series is an industry-standard family of integrated circuits.

4000 series may also refer to:

## Japanese train types

* Meitetsu 4000 series electric multiple unit
* Odakyu 4000 series electric multiple unit
* Seibu 4000 series electric multiple unit
* Tokyu 4000 series electric multiple unit
* Yokohama Municipal Subway 4000 series electric multiple unit

## Other uses

* Avaya ERS 4000 series, a series of Ethernet routers
* Avaya VSP 4000 series, a series of Ethernet routers
* Busan Transportation Corporation 4000 series people mover for the Busan Metro
* CTA 4000 series, a series of Chicago "El" rolling stock
* GEC 4000 series, a series of minicomputers
* HP LaserJet 4000 series, a series of printers
* International 4000 series, a series of trucks
* International 4000 series (1989), a series of trucks
* Port Authority 4000-series PCC, a series of streetcar
* Radeon HD 4000 series, a series of graphics processing unit
* Seoul Metro 4000 series, a series of Seoul Metro train.
