Lüshun Port (Chinese: 旅顺港; pinyin: Lǚshùn gǎng) in Lüshunkou District, Dalian, Liaoning province, China, refers to the original Lüshun Naval Port (Chinese: 旅顺军港) for military use or the New Lüshun Port (Chinese: 旅顺新港) for commercial use. The port was known in colonial times as Port Arthur.