Addition Creek is a stream in the U.S. state of Montana.

According to tradition, Addition Creek was named in celebration of the wedding of forestry official Donald Bruce (namesake to Bruce Creek).

[7] Addition Creek rises at Bruce Mountain in Flathead County, Montana, and then flows northwest to join South Fork Flathead River about 0.25 miles southwest of Horse Ridge.

[3] Addition Creek drains 17.43 square miles (45.1 km2) of area, receives about 54.3 in/year of precipitation, has a wetness index of 283.50, and is about 86% forested.

This article related to a river in Montana is a stub.