Tongliao is a prefecture-level city in eastern Inner Mongolia, People's Republic of China. The area is 59,535 square kilometres and as of the 2020 census, its population was 2,873,168. However, the city proper made of Horqin district, had 921,808 inhabitants. The city was the administrative centre of the defunct Jirem League. The original Mongolian name for Tongliao city proper is Bayisingtu, while the original name of the prefecture-level city is Jirem.