Almartha is an unincorporated community in northern Ozark County, Missouri, United States. It is located approximately thirteen miles north of Gainesville and four miles southeast of Wasola on Route 95. The village is located in a valley on a tributary of Spring Creek. Several homes are located there. The old mill and current fish hatchery of Rockbridge lies downstream on Spring Creek, about six miles to the east. The community was named from the first names of early settlers Albert and Martha McSpadden.