Hastain is an unincorporated community in Benton County, Missouri, United States.

Hastain is located on Supplemental Route V, 11.5 miles (18.5 km) east-southeast of Warsaw.

[2] A post office called Hastain was established in 1884, and remained in operation until 1951.

[3] The community was named after the local Hastain family.

This Benton County, Missouri state location article is a stub.