Tanaina is a census-designated place (CDP) in the Matanuska-Susitna Borough in the U.S. state of Alaska.

Located 4 miles north from Wasilla, it is part of the Anchorage, Alaska Metropolitan Statistical Area.

Tanaina first appeared on the 2000 U.S. Census as a census-designated place (CDP).

14.9% of all households were made up of individuals, and 1.9% had someone living alone who was 65 years of age or older.

Tanaina's median household income rose to $76,114 in 2010–2014, according to the 2010–2014 American Community Survey.