Russian Dalian, also known as Kvantunskaya Oblast, was a leased territory ruled by the Russian Empire that existed between its establishment after the Pavlov Agreement in 1898 and its annexation by the Empire of Japan after the Russo-Japanese War in 1905.

Dalian is a major sub-provincial port city in Liaoning province, People's Republic of China, and is Liaoning's second largest city and the third-most populous city of Northeast China. Located on the southern tip of the Liaodong peninsula, it is the southernmost city in both Liaoning and the entire Northeast. Dalian borders the prefectural cities of Yingkou and Anshan to the north and Dandong to the northeast, and also shares maritime boundaries with Qinhuangdao and Huludao across the Liaodong Bay to west and northwest, Yantai and Weihai on the Shandong peninsula across the Bohai Strait to the south, and North Korea across the Korea Bay to the east.