Neihart is a town in Cascade County, Montana, United States. It is located in the center of Little Belt Mountains. The population was 43 at the 2020 census. It is part of the Great Falls, Montana, Metropolitan Statistical Area.

Cascade County is a county located in the U.S. state of Montana. As of the 2020 census, the population was 84,414, making it the fifth-most populous county in Montana. Its county seat is Great Falls.