The is a series of articulated trams built by Tokyu Car Corporation in 1999 for the Tà Âkyà « Setagaya Line.
The trains are long, wide, and feature an IGBT-VVVF inverter system.
The trains entered revenue service on 11 July 1999. They replaced the older , , , and .
In commemoration of the 110th anniversary of the Tamagawa Electric Railway in April 2017, set 305 received a special wrapping. For the 50th anniversary of the Setagaya Line in May 2019, set 308 received a cat-themed wrapping.
From 10 April 2022, a 300 series set is due to receive a special livery to commemorate the 100th anniversary of Tokyu Corporation's founding.