The Tobu 3000 series (東武3000系, Tōbu 3000-kei) was a DC electric multiple unit (EMU) commuter train type operated by the private railway operator Tobu Railway in Japan between 1964 and 1996.

The 3000 series was created by modernizing old Tobu EMU cars dating from the 1920s and 1930s, by adding new 18 m (59 ft 1 in) long steel bodies based on the 2000 series design, with three pairs of sliding doors per side, and front ends based on the 8000 series design.

[1] All sets were based at Nanakodai Depot and used on Tobu Noda Line services.

[1] 24 former 3000 series vehicles withdrawn from Noda Line duties were sold to the Jomo Electric Railway in Gunma Prefecture.

18 of these were reformed as nine 2-car 300 series sets, with the remaining cars stored as sources of spare parts or cut up.