Brockway is an unincorporated community and census-designated place (CDP) in southern McCone County, Montana, United States, located near the Redwater River.

[5] The Northern Pacific Railway's Redwater branch line reached the town in 1928.

The town "became a major livestock shipping point reaching number one in the U.S. in 1934," according to historical marker author Bob Fletcher.

According to the U.S. Census Bureau, the Brockway CDP has an area of 0.35 square miles (0.91 km2), all land.

[1] The Redwater River, a northeast-flowing tributary of the Missouri, passes just west and north of the community.