The E2 series (E2系, E2-kei) is a Japanese high-speed Shinkansen train type operated by East Japan Railway Company (JR East) on the Tohoku Shinkansen high-speed lines in Japan since 1997. They are formed in 8- and 10-car sets. The 8-car sets were used on the Hokuriku Shinkansen, and the 10-car sets are on Tohoku Shinkansen services. The 10-car sets can be coupled to E3 series Komachi sets using couplers hidden behind retracting nose doors.
They operate at a maximum speed of 275 km/h (170 mph) on the Tohoku Shinkansen.