The Port of Tacoma is an independent seaport located in Tacoma, Washington. The port was created by a vote of Pierce County citizens on November 5, 1918. The Edmore was the first ship to call at the port in 1921. The port's marine cargo operations, among the largest in the United States, was merged with the Port of Seattle's in 2015 to form the Northwest Seaport Alliance.

Tacoma is the county seat of Pierce County, Washington, United States. A port city, it is situated along Washington's Puget Sound, 32 miles (51 km) southwest of Seattle, 36 miles (58 km) southwest of Bellevue, 31 miles (50 km) northeast of the state capital, Olympia, 58 miles (93 km) northwest of Mount Rainier National Park, and 80 miles (130 km) east of Olympic National Park. The city's population was 219,346 at the time of the 2020 census. Tacoma is the second-largest city in the Puget Sound area and the third-most populous in the state. Tacoma also serves as the center of business activity for the South Sound region, which has a population of about 1 million.