The Port of Kaohsiung is the largest harbor in Taiwan, handling approximately 10.26 million twenty-foot equivalent units (TEU) worth of cargo in 2015. The port is located in southern Taiwan, adjacent to Kaohsiung City, and surrounded by the city districts of Gushan, Yancheng, Lingya, Cianjhen, Siaogang, as well as Cijin. It is operated by Taiwan International Ports Corporation, Taiwan's state-owned harbor management company.

Kaohsiung, officially Kaohsiung City, formerly known as Takau or Takao , is a special municipality located in southern Taiwan. It ranges from the coastal urban center to the rural Yushan Range with an area of 2,952 km2 (1,140 sq mi). Kaohsiung City has a population of approximately 2.73 million people as of October 2023 and is Taiwan's third most populous city and largest city in southern Taiwan.