The Ministry of Defense is an Indonesian government ministry responsible for the defense of Indonesia. The ministry was formerly known as the Department of Defense until 2009 when the nomenclature changed based on Act Number 39 of 2008 on State Ministries, the name of the Department of Defense was changed to the Ministry of Defense of the Republic of Indonesia. The currently-appointed minister is Prabowo Subianto, replacing Ryamizard Ryacudu on 23 October 2019.