An administrative agency; a government authority that carries out public administration (e.g., issues permits, enforces regulations).
新しい条例については所管の行政庁が詳細を発表した。
The relevant administrative agency announced the details of the new ordinance.
許認可の申請は担当の行政庁に提出してください。
Please submit permit applications to the responsible administrative authority.
行政庁の決定に不服がある場合は審査請求や訴訟で争うことができる。
If you are dissatisfied with an administrative decision, you can challenge it via review requests or litigation.