Peveril Meigs III (May 5, 1903 – September 16, 1979) was an American geographer, notable for his studies of arid lands on several continents and in particular for his work on the native peoples and early missions of northern Baja California, Mexico.
Beginning during World War II, Meigs was employed primarily by the U.S. government, working for the Office of Strategic Services (OSS) (1942-1944), Joint Intelligence Study Publishing Board (1944-1947), Earth Sciences Division of the U.S. Army Quartermaster Corps (1949-1953), and Quartermaster Research and Engineering Center (1953-1965).
Particularly notable was his early work on Baja California, which was influenced by his Berkeley mentors, Carl O. Sauer in historical geography and Alfred L. Kroeber in ethnography.
During his field trips to northern Baja California, particularly in 1928, 1929, and 1936, Meigs became familiar with the region's surviving Indian groups.
After his retirement in 1965, Meigs published several additional articles on the ethnography and archaeology of these groups, based on his notes from his earlier field studies.