U.S. Route 10 (US 10), was a 700-mile (1,100 km) section of U.S> Numbered Highway in Montana, United States from 1926 to 1986.

An alternate route (MT 1) split from US 10 in Drummond and rejoined US 10 east of Anaconda.

Before the establishment of the United States Numbered Highway System, a transcontinental road called the Yellowstone Trail ran through Montana.

Over time, it was slowly upgraded to freeway standards after the Interstate Highway System was introduced in 1956.

Eventually, the majority of US 10 (except a section later designated MT 2) ran concurrently with the I-90 and I-94.

[2] After US 10 was decommissioned, Montana created MT 2 to replace a portion of former US 10 from Butte to Three Forks.