Charles Sidney Bluemel (17 July 1884 – 17 December 1960) was an American psychiatrist and pioneer of speech pathology, best known for his research on stuttering. Bluemel was born in London. He emigrated to the United States and studied at University of Colorado where he obtained his M.D. in 1916. He practiced psychiatry in Denver an was the owner of Mount Airy Sanitarium (1927–1953), a private psychiatric hospital. Bluemel was editor of Colorado Medicine (1924–1925) and Denver Medical Bulletin (1920–1921). He married Elinor Hensley in 1921, they had two children.