600 series

600 series may refer to:

Japanese train types

 * Keikyu 600 series, a train operated by Keikyu since 1994
 * Keikyu 600 series, a train operated by Keikyu from 1956, which later became the Keikyu 700 series (1956)


 * E1 Series Shinkansen, originally scheduled to be classified "600 series"

Computing and electronics

 * 600 series connector, the Australian standard telephone handset connector before the introduction of the RJ11 and RJ12 modular connectors
 * GE-600 series mainframe computers
 * GeForce 600 series graphics processing units
 * Radeon 600 series graphics processing units
 * ThinkPad 600 series, a line of laptop computers

Other

 * Bombardier Challenger 600 business jets
 * Daimler-Benz DB 600 series aircraft engines
 * French 600 Series submarines
 * Italian 600 Series submarines
 * Rover 600 Series car