Akasaka Twin Tower, Mixed-use skyscraper complex in Akasaka district, Tokyo, Japan.

Akasaka Twin Tower is an office and commercial complex in the Akasaka district of Tokyo, made up of two connected high-rise buildings. The towers share a common base that contains shops, restaurants, and other facilities open to the public.

The complex opened as three buildings: a main tower, an east tower and, in July 1992, a separate annex across the street. The main and east towers, joined from the fifth floor up by evacuation bridges, were demolished from April 2014 under a Taisei Corporation plan, and the annex was renamed ATT EAST in August 2024 as part of the Tokyo World Gate Akasaka redevelopment.

The nickname ATT comes from the initials of Akasaka Twin Tower. Between the former Main and East buildings stood Laforet Museum Akasaka, designed by Shoji Yeh, a venue used for plays, fashion shows and new-product launches. The surviving annex, built in 1992 across one street, was renamed ATT EAST in August 2024 when it was folded into the Tokyo World Gate Akasaka block.

The surviving building, renamed ATT EAST in August 2024, stands one street away from the demolished main and east buildings, now the Tokyo World Gate Akasaka block. It is about 5 minutes on foot from Tameike-sanno Station (Ginza and Namboku lines), 7 minutes from Akasaka Station and 7 minutes from Kokkai-gijidomae Station. Toei bus route To-01 stops at Akasaka Ark Hills.

The main and east buildings were joined from the fifth floor up by tower bridges, one on every storey, serving as evacuation routes between the two blocks. Between the buildings stood Laforet Museum Akasaka, designed by Sho Ei Ha, used for plays, fashion shows and product launches. Demolition from April 2014 used Taisei's Tecorep system.