Government-owned companies based in Tokyo

, also known by its romanized initialism NHK, is a Japanese public broadcaster. It is a statutory corporation funded by viewers' payments of a television license fee.

operator of one of the urban train systems in Tokyo, Japan

cigarette manufacturing company

Japanese conglomerate mainly engaged in postal service

subway system in Tokyo, Japan

Japanese bank

public corporation that offered postal service in Japan from 2003 to 2007