Flat Branch is an unincorporated community located in the Anderson Creek Township of Harnett County, North Carolina, United States.

It is a part of the Dunn Micropolitan Area, which is also a part of the greater Raleigh–Durham–Cary Combined Statistical Area (CSA) as defined by the United States Census Bureau.

It is home to three landmarks: Flat Branch Covenant Presbyterian Church[4][5][6] (founded in 1873), Flat Branch Volunteer Fire Department,[7] and Countryside Monuments.

It is also home to Payola Post Office,[8] a building of unique structure consisting of a log exterior, one room, and no windows.

This article about a location in Harnett County, North Carolina is a stub.