The Joint Staff Office (Japanese: 統合幕僚監部, Tōgō bakuryō-kanbu: abbreviation: JSO), also known as the Joint Staff and formerly known as the Joint Staff Council, is one of the administrative agencies within the Government of Japan. It is a special organisation under the Japanese Ministry of Defense responsible for integrating the military operations of the Ground, Maritime and Air Self-Defense Forces. The abbreviation of the agency in Japanese is Tōbaku (統幕).

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Joint Staff Office

統合幕僚監部 Tōgō Bakuryō Kanbu
Agency overview
Formed	July 1954 (1954-07)
Jurisdiction	Government of Japan
Headquarters	Shinjuku Ward, Tokyo, Japan
Agency executive	General Yoshihide Yoshida, Chief of Staff, Joint Staff
Parent department	Ministry of Defense (Japan)
Child agencies	Joint Staff College SDF Intelligence Security Command JSDF Cyber Defence Command
Website	Joint Staff Office Homepage

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The JSO is considered to be the equivalent of the Joint Chiefs of Staff of foreign armed forces, including that of the United States. Its predecessor was the Joint Chiefs Council (JSC). The office is located in Shinjuku Ward, Tokyo.

The current Chief of Staff, Joint Staff is General Yoshihide Yoshida, who replaced General Koji Yamazaki after being appointed on 22 March 2023.^[1][2]

The JSO is divided into four departments as can be seen below. Each department has an associated code beginning with the letter J and a corresponding single-digit number. The Joint Staff also consists of four special staff (Joint Staff Councillor/Director General, Public Affairs Director General, Logistics and Legal Affairs General).^[3] The current Chief of Staff, Joint Staff is General Yoshihide Yoshida, who was appointed into the position on 22 March 2023.

JSO internal structure:

• General Affairs Department (J-1)
• Operations Department (J-3)
• Defense Plans and Policy Department (J-5)
• C4 Systems Department (J-6)

The JSO is responsible for coordinating the activities of the ground, maritime and air service branches of the Japan Self-Defense Forces. Duties of the Joint Staff also include as follows.^[4]

• Defense and security planning to smoothly execute the mission of the Joint Operation
• Development of an action plan
• Education and training, organisation, equipment procurement, deployment, accounting, acquisition, logistics, health and hygiene, human resource planning
• Development of a training plan
• Research and development for the efficient operation of the services needed
• Management and coordination of the forces to execute services in charge

Founded in 1961, the Joint Staff College is an affiliated school of the JSO and the Ministry of Defense.^[5]