Taku Harbor (Lingít: S'iknáx̱saankʼi) is a sheltered bay located about 22 miles (35 km) southeast of central Juneau, Alaska, United States.

A cemetery located near the largest creek in the harbor remains visible near the site of the former Taku Tlingit village.

Situated on the northern aspect of the harbor, the 150-feet square trading post had 18 foot tall wood fortifications and two eight-sided corner bastions.

However, the community of Taku Tlingit built near the fort remained for a period and the US Census taken in 1880 provided a population count of 269.

In 1901, the operation was sold to Pacific Cold Storage Company who established the first cold-storage plant in Alaska at the site.