Tongliao (Mongolian: ᠲᠦᠩᠯᠢᠶᠣᠤ ᠬᠣᠲᠠ Tüŋliyou qota; Chinese: 通辽市) is a prefecture-level city in eastern Inner Mongolia, People's Republic of China. The area is 59,535 square kilometres (22,987 sq mi) and population is 3,139,153 (as of 2010); the city proper has 898,895 inhabitants (2010). The city was the administrative centre of the defunct Jirem League (哲里木盟; ᠵᠢᠷᠢᠮ ᠠᠶᠢᠮᠠᠭ).
The original Mongolian name for Tongliao city proper (i.e. Horqin District) is Bayisingtu ('having buildings'), while the original name of the prefecture-level city is Jirem. The Mongolian dialect spoken in this area is Khorchin Mongolian.