The Board of Joint Chiefs of Staff (Spanish: Junta de Jefes de Estado Mayor, JUJEM) was the highest joint military command body of the Spanish Armed Forces that operated between 1977 and 2005.

The Board, subject to the political dependence of the Prime Minister, constituted the highest collegiate body of the chain of military command of Army, the Navy and the Air Force.

The Board consisted of a president, selected from among lieutenant generals or admirals of the three branches of the Armed Forces, their chiefs of staff (Army, Navy and the Air Force) and a secretary.

Of the General Headquarters of the JUJEM they depended: After its dissolution, the functions of the Board were assumed by the current Defence Staff.

The content of this article incorporates material published in the Boletín Oficial del Estado, which is in the public domain in accordance with the provisions of Article 13 of the Spanish Intellectual Property Law.