Marion Post Wolcott (1910–1990) was an American photographer best known for her work with the Farm Security Administration during the Great Depression. Her images document rural communities, poverty, and social conditions across the United States, combining a direct documentary style with a strong sense of composition and empathy for her subjects. Wolcott trained at the New School for Social Research and the Photo League in New York before joining the FSA in 1938, where she worked alongside photographers such as Walker Evans and Dorothea Lange. Her photographs are held in the Library of Congress and major museum collections, and they remain significant records of 20th-century American life.