As of 1 October 2016 the following fleet of electric multiple unit (EMU) trains is used on Nambu Line services, with all trainsets based at Nakahara Depot.

205-1000 series 3 x 2-car EMUs (Nambu Branch Line services, since August 2002)
E233-8000 series 35 x 6-car EMUs (since 4 October 2014)
E233-8500 series 1 x 6-car EMU (since 15 March 2017)
From 15 March 2017, the last remaining 209 series trainset, set 53, was replaced by a six-car Ome Line and Itsukaichi Line E233-0 series set 670 modified and renumbered to become E233-8500 series set N36.
As of 1 October 2016 the following fleet of electric multiple unit (EMU) trains is used on Nambu Line services, with all trainsets based at Nakahara Depot.
205-1000 series 3 x 2-car EMUs (Nambu Branch Line services, since August 2002)
E233-8000 series 35 x 6-car EMUs (since 4 October 2014)
E233-8500 series 1 x 6-car EMU (since 15 March 2017)
From 15 March 2017, the last remaining 209 series trainset, set 53, was replaced by a six-car Ome Line and Itsukaichi Line E233-0 series set 670 modified and renumbered to become E233-8500 series set N36.
Nambu Line