Tonsina /tɒnˈsiːnə/ is a census-designated place (CDP) in Copper River Census Area, Alaska, United States.

This roadhouse alongside the Richardson Highway consists of a bar, restaurant, gas station, convenience and liquor store, laundromat and showers.

The Tonsina River Lodge is a rambling, shambling, gravel-covered spread, with weatherbeaten buildings.

The historic hotel is an orange, three story Army barracks with a red tin roof.

The lodge sits in the foothills of several towering, snow-capped mountain ranges, next to a stream.

The Squirrel Creek State Recreation Site is a small 160 acres (65 ha) park on the banks of the Tonsina.

The park has a campground, and access to the river, a creek, and a small lake, offering fishing for various species of trout and salmon.