The China Railways JF5 (解放5, Jiěfàng, "liberation") class steam locomotive was a class of 2-8-2 steam locomotives operated by the China Railway, originally built by Kawasaki in Japan in 1923–1928 for the Jichang Railway.
These locomotives were originally built for the Jichang Railway, which in 1931 merged with the Jidun Railway to form the Jichang Jidun Railway. After the Japanese established the puppet state of Manchukuo, this and other privately owned railways in the territory of Manchukuo were nationalised to create the Manchukuo National Railway, which then operated these locomotives. In 1937, the Japanese set up the collaborationist Provisional Government of the Republic of China in northern China (minus the territories of the puppet states of Manchukuo and Mengjiang), and in 1938, the North China Transportation Company was established to manage all railway and bus transportation in the territory, and at the same time, the Manchukuo National transferred these locomotives to the NCTC. As a subsidiary of the South Manchuria Railway, North China Transport used the same classification system for locomotives as the SMR did, under which these engines were designated Mikako (ミカコ) class.
After the end of the Pacific War, these locomotives were passed on to the Republic of China Railway. After the establishment of the People's Republic of China, China Railways designated them ㄇㄎ5 (MK5) class in 1951, and subsequently 解放5 (JF5) class in 1959.
The last of these locomotives were retired in 1990.