Tokyo at-large district is an electoral district of the House of Councillors in the National Diet, the national legislature of Japan. The district was created in 1947 by the new Constitution of Japan and sent 8 members to the House from 1947 until 2007. From 2007 until 2016, this district sent 10 members to the House, and from 2016 onwards, the district has sent 12 councillors to the House, making it by far the largest constituency in the House of Councillors.