Police ranks
Police ranks in Japan
Nine ranks — and above all nine, a POST rather than a rank: the National Police Agency’s own overview states that the highest position in the Japanese police is held by the NPA Commissioner General.
What ranks do Japanese police officers hold, and who is above them?
The National Police Agency states it directly: "Police officers are divided into nine ranks: Superintendent General, Senior Commissioner, Commissioner, Assistant Commissioner, Superintendent, Chief Inspector, Inspector, Sergeant, and Police Officer. On top of the nine ranks, the highest position in the Japanese police is held by the NPA Commissioner General." That last sentence is the most useful thing on this page. Japan does not put its most senior officer at the top of the rank ladder; it places the leadership of the police outside the ladder entirely, as a post. Anyone reading a rank list as though it were an organisation chart will get Japan wrong, and will probably get several other countries wrong too.
The ranks
Listed from the most junior rank upward, in the order this system itself gives them.
Police Officer
Sergeant
Inspector
Chief Inspector
Superintendent
Assistant Commissioner
Commissioner
Senior Commissioner
Superintendent General
Posts are not ranks
The NPA Commissioner General is a POST, not a rank, and the Agency says so: it sits "on top of the nine ranks". Japanese policing is carried out by the prefectural forces under the Agency’s coordination and supervision, so the rank an officer holds and the force that employs them are separate facts.
Where this connects
The organisation: National Police Agency.
The system it sits in: Japan.
What a rank is, as against a role, a specialisation and an assignment: rank, role and specialisation.
Facts last checked against sources on 13 September 2026.
Sources
National Police Agency (NPA), Japan · Government publication · 2020 · link verified 2026-09-13
The NPA's own English overview; figures and wording extracted directly from the report PDF. Supports: that the National Public Safety Commission (NPSC) and the National Police Agency (NPA) constitute the national police organisation and the NPSC supervises the NPA; that the Police Act empowers the national government to establish a central police organisation 'to control and supervise prefectural police forces on matters of national concern'; that the NPSC 'draws up basic policies and regulations, coordinates police administration on matters of national concern and sets general standards'; that each prefecture has 'the authority to carry out police duties'; that Regional Police Bureaus are subordinate to the NPA; that police boxes (Koban) and residential police boxes (Chuzaisho) are subordinate units of police stations; that the Tokyo Metropolitan Police Department is the prefectural police of Tokyo; and that 'the Prime Minister is not empowered to exercise direct command or control over the Commission'. CRUCIALLY, it supports national COORDINATION, STANDARDS and SUPERVISION ON MATTERS OF NATIONAL CONCERN, with operational policing carried out by the prefectures — NOT a single nationally commanded operational police force. Does not support operational detail. RE-READ on 2026-09-13 for its rank section, which supports verbatim: ‘Police officers are divided into nine ranks: Superintendent General, Senior Commissioner, Commissioner, Assistant Commissioner, Superintendent, Chief Inspector, Inspector, Sergeant, and Police Officer. On top of the nine ranks, the highest position in the Japanese police is held by the NPA Commissioner General.’ It also supports that newly promoted Sergeants and Inspectors train at regional police schools and that a Chief Inspector Appointment Course is run at the National Police Academy.