The Republic of China Armed Forces are the armed forces of the Republic of China (ROC) that once ruled Mainland China and now currently restricted to its territorial jurisdictions of Taiwan, Penghu, Kinmen and Matsu Islands. They consist of the Army, Navy, Air Force and Military Police Force. The military is under the civilian control of the Ministry of National Defense, a cabinet-level agency overseen by the Legislative Yuan.

The Republic of China (ROC), or simply China, was a sovereign state based on mainland China from 1912 to 1949 prior to the government's relocation to Taiwan, where it continues to be based today. The ROC was established on 1 January 1912 during the Xinhai Revolution against the Qing dynasty, ending the imperial history of China. The Republican government was ruled by the Kuomintang (KMT) as a one-party state based in Nanjing from 1927, until its flight to Taipei on 7 December 1949 following the KMT's de facto defeat by the Chinese Communist Party (CCP) in the Chinese Civil War. The CCP proclaimed the People's Republic of China on 1 October 1949, while the ROC retains control over the "Free Area", with the political status of Taiwan remaining in dispute to this day.