New National Theatre Tokyo, Opera house in Shinjuku, Japan

The New National Theatre Tokyo is a steel-reinforced concrete building of five floors above ground and four below, designed by Takahiko Yanagisawa with TAK Architectural Institute. Its white-tiled facade is raised on thick cylindrical concrete piers, with dark metal lettering reading "新国立" on the upper right. Inside are three theatres: the 1,814-seat Opera Palace, the Playhouse (1,038 or 1,010 seats), and the Pit (340–468 seats).

The theatre was first proposed in the mid-1950s as a counterpart to the National Theatre for traditional arts, but site issues delayed it for decades. In 1972 a preparatory council was set up, and Takahiko Yanagisawa's design was chosen. The building opened on 10 October 1997 with a performance of Toshiro Mayuzumi's opera Takeru, attended by Emperor Akihito and Prime Minister Ryutaro Hashimoto.

The theatre's name was chosen by public competition: on 29 March 2007 the main auditorium was branded Opera Palace, Tokyo. Its opera company performs with the Tokyo Philharmonic and Tokyo Symphony alternating in the pit, and since 1999 it has run July opera sessions for high school students, adding children's opera from 2004.

The building sits directly on the central exit of Hatsudai Station on the Keio New Line, about a minute on foot; buses stop at "New National Theatre Front". The Pit is on B1F, the information centre and roof garden on 5F, rehearsal rooms on B2F. A paid underground car park offers a theatregoer discount, and the road on the west side is named Opera Street.

The Stage Set & Design Centre in Choshi, Chiba Prefecture, stores and exhibits scenery and costumes from past productions. In 2010 it was reported that some large props could not fit in the warehouse and were kept outdoors in containers, where mould damaged part of them.