Susitna is a census-designated place (CDP) in Matanuska-Susitna Borough, Alaska, United States.

[2] Susitna was once home to the legendary Athabaskan elder, historian and ethnologist Shem Pete (c1896-1989), who documented countless locations travelling thousands of miles within the Matanuska-Susitna region.

[3] His works were published in Shem Pete's Alaska: The Territory of the Upper Cook Inlet Dena'ina.

A portion of the CDP containing the actual settlement of Susitna is on the east side of the river, about 22 miles (35 km) as the crow flies southwest of Houston and 35 miles (56 km) west of Wasilla.

[1] Susitna first appeared on the 1880 U.S. Census as the unincorporated Tinneh villages of Sushetno (combined total of 90 residents, all Tinneh, although they were listed separately as "Sushetno (1st) and (2nd) Villages" (with a population of 44 and 46, respectively).

It was greatly enlarged from its original location on the east bank of the Susitna River to take in both sides of the river, and now the bulk of its area is on the west bank today.

47.4% of all households were made up of individuals, and 26.3% had someone living alone who was 65 years of age or older.