An organization established for the purpose of conducting public enterprises, supported by funding from the government or local authorities, as well as private financial resources. Examples include housing corporations and road development agencies.

A specific type of legal entity formed to serve a public interest, created with investments primarily from the national or local governments to address particular societal needs.

A special corporation designed to implement projects that benefit the public, formed from contributions by the government or local government entities, historically including agencies like the Japan Highway Public Corporation and Urban Infrastructure Development Corporation.