Bertha is an unincorporated community in southern Douglas County, Missouri. Bertha is located on the Fox Creek floodplain just north of its junction with Bryant Creek on County Road 95-345 southeast of Gentryville.
A post office called Bertha was established in 1903, and remained in operation until 1956. An early postmaster gave the community the first name of his daughter, Bertha Hawkins.
Coordinates: 36°50′16″N 92°23′05″W / 36.83778°N 92.38472°W