The Royal Johor Military Force (Abbr.: JMF; Malay: Askar Timbalan Setia Negeri Johor — ATSNJ; Jawi: عسكر تيمبلن ستيا نڬري جوهر) is an independent military force of the state of Johor and the private royal guard of Sultan of Johor in Malaysia. The JMF is Malaysia's oldest active military unit still in operation and the only military in the Federation that is maintained by a state. The force comes under the control of the Sultan. Its headquarters are located at , Johor Bahru.