Odakyu 9000 series
A 9000 series train in May 2004
In service	1972–2006
Manufacturer	Tokyu Car, Kawasaki Heavy Industries
Constructed	1972–1977
Scrapped	2005–2006
Number built	90 vehicles (18 sets)
Number in service	None
Number preserved	1 vehicle
Formation	4/6 cars per trainset
Operators	Odakyu Electric Railway
Specifications
Width	2,870 mm (9 ft 5 in)
Doors	4 pairs per side
Maximum speed	100 km/h (62 mph) (service) 120 km/h (75 mph) (design)
Traction motors	Mitsubishi DC compound motor[1]
Power output	110 kW x4 per motored car
Electric system(s)	1,500 V DC overhead lines
Current collector(s)	Pantograph
Bogies	FS085, FS385[2]
Braking system(s)	Regenerative braking, dynamic braking
Multiple working	2600/4000I/5000I/8000/1000/3000 series
Track gauge	1,067 mm (3 ft 6 in)

The Odakyu 9000 series (小田急9000形, Odakyū 9000-gata) was a commuter electric multiple unit (EMU) train type operated by the private railway operator Odakyu Electric Railway in Japan from 1972 until 2006.

The trains were equipped with 110 kW motors and chopper control.^[3]

The fleet consisted of nine four-car and nine six-car sets.^[4] The sets were formed as follows.^[5]

Four-car sets

Six-car sets

The trains entered service in 1972, and were the recipient of the 1973 Laurel Prize.^[6] Chiyoda Line through services with 9000 series trains began on March 31, 1978.^[5] The trains were withdrawn from service in March 2006.^[4] A farewell run between Hadano and Karakida was operated on May 13, 2006.^[5]

• 
  Laurel Prize 1973 plaque
• 
  First Odakyu and Chiyoda Line through-services on March 31, 1978
• 
  9000 series (left) with "Sayonara" headboard on May 13, 2006

• Deha 9001: stored at the Kitami inspection facility^[3]

Trains of a similar design operate on the Roca Line in Argentina.^{[citation needed]}