Adams Branch is a stream in Cass County, Missouri. It is a tributary of the South Grand River.
Adams Branch was named after William Adams, a pioneer citizen.
Adams Branch rises about 3 miles northeast of Freeman, Missouri, in Cass County and then flows south to join the South Grand River about 2 miles southeast of Freeman.
Adams Branch drains of area, receives about 40.2 in/year of precipitation, has a wetness index of 447.51, and is about 15% forested.