An official organization established for public purposes, such as government bodies or agencies; a public institution or organization.
公的機関の窓口で手続きを行ってください。
Please complete the procedure at the public institution's counter.
このデータは公的機関が公開した統計に基づいている。
These data are based on statistics published by a public institution.
公的機関と民間企業が共同でプロジェクトを進めることになった。
A public institution and a private company decided to proceed with a joint project.