Panjin is a coastal prefecture-level city in central Liaoning province, People's Republic of China, situated on the northern shore of the Liaodong Bay. It borders Anshan to the east, Yingkou to the southeast, and Jinzhou to the west and north. It is the smallest city in both Liaoning and the entire Northeast China with an administrative area of 3,825 square kilometres (1,477 sq mi), and Liaoning's least populous city with a population of 1,389,691 people as of the 2020 census, all in the built-up area made of the 2 urban districts and Dawa and Panshan counties now largely being conurbated.

Liaoning is a coastal province in Northeast China that is the smallest, southernmost, and most populous province in the region. With its capital at Shenyang, it is located on the northern shore of the Yellow Sea, and is the northernmost coastal province of the People's Republic of China.