The Chief of the Joint Defence Staff (JEMACON) is a high-ranking military officer.

The JEMACON is the closest assistant and advisor to the Chief of the Defence Staff and it is appointed by the Monarch at the request of the Minister of Defence.

To carry out its duties of assistance and advise, the JEMACON leads the Joint Defence Staff (EMACON), a military body integrated in the Defence Staff and formed by all the military personnel necessary to support the JEMAD in its duties.

[2] Since 5 August 2020, the current and 18th JEMACON is Lieutenant general Fernando García González-Valerio.

[3] The JEMACON leads the Joint Defence Staff, the main advisory and assistance body to the Chief of the Defence Staff.