Septimus Sisson (1865–1923) was a British-born American veterinary anatomist, best known as the author of The Anatomy of the Domestic Animals (1910), the standard English-language textbook on veterinary gross anatomy for much of the twentieth century. Sisson served as Professor of Comparative Anatomy in the veterinary college at Ohio State University, where he built his reputation as an authority on the structure of domestic animals — horses, cattle, sheep, pigs, and dogs. The Anatomy of the Domestic Animals became the definitive reference in the field; later editions were revised and expanded by James Daniels Grossman and appeared as Sisson and Grossman's, a title still cited in veterinary anatomy courses today. He also wrote A Text-book of Veterinary Physiology and Ligaments and Muscles of the Horse (1895), reflecting a career-long focus on musculoskeletal and comparative anatomy. His major texts are now in the public domain.
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