Douglas Harbor (Inuit: Qanartalik) is a harbor off the coast of Douglas Island in Juneau, Alaska. The name was published by the United States Geological Survey in 1986 and entered into the Geographic Names Information System on January 1, 2001.

In the 2002 regular election, Juneau-area voters approved the issue and sale of bonds totaling $15,000,000 for improving the borough's harbors, utilities, and parks systems. $7.1 million was allocated for the harbors, including Douglas.

In January 2009, winter weather caused a boat in the harbor to sink.