Cooch Behar (), or Koch Bihar, is a city and a municipality in the Indian state of West Bengal. It is the headquarters of the Cooch Behar district. It is in the foothills of the Eastern Himalayas at 26°22′N 89°29′E. Cooch Behar is the only planned city in the North Bengal region with remnants of royal heritage. Being one of the main tourist destinations of West Bengal, housing the Cooch Behar Palace and Madan Mohan Temple, it has been declared a heritage city. It is the maternal home of Maharani Gayatri Devi of Jaipur.
During the British Raj, Cooch Behar was the seat of the princely state of Koch Bihar, ruled by the Koch Kingdom of often described as the Shiva Vansha, tracing their origin from the Koch tribe of North-eastern India. After 20 August 1949, Cooch Behar District was transformed from a princely state to its present status, with the city of Cooch Behar (Koch Behar) as its headquarters.