The Osaka Metropolis plan (大阪都構想 Ōsaka-to kōsō?) or Osaka Metropolis is a plan to transform Osaka Prefecture from a fu, an urban prefecture, into a to, a metropolis. Under the initially envisioned plan, Osaka city, Sakai city, and other surrounding cities in Osaka prefecture, were to be dissolved and – similarly to Tokyo urban wards within Tokyo – subdivided into special wards that have a status as municipalities but leave some municipal tasks and revenues to the prefectural administration. As political resistance grew, notably the opposition to the plan in Sakai city expressed in the 2013 mayoral election, the concrete plan was reduced to, at least as a first step, abolish only Osaka city. As in Tokyo, the metropolis would have continued to include all other municipalities of the prefecture and serve as prefectural government for them.
The plan was defeated by a slim margin of 0.76% in the Osaka Metropolis Plan referendum, 2015 in Osaka city.
The plan is a main goal of the Osaka Restoration Association, a political party led by former Osaka governor and current Osaka city mayor Tōru Hashimoto. The party currently includes the governor of Osaka, the mayor of Osaka city, a majority in the Osaka Prefectural Assembly and a plurality of seats in the assemblies of Osaka city and Sakai city.
Under the Association's plan, the 24 wards of Osaka, seven wards of Sakai, and nine other municipalities in Osaka Prefecture would be reorganized into twenty special wards, each having municipal status similar to the special wards of Tokyo. As is the case in Tokyo, the prefectural government would be responsible for collecting fixed asset taxes and regional corporate taxes within this area, and would provide water, fire protection, public transit and other services through a unified administration for all 20 wards, while resident services and other administrative tasks would be handled by the wards themselves.