Henry Clay Dalton (May 7, 1847 – November 3, 1911) was superintendent of the St. Louis City Hospital, Missouri, United States, from 1886 to 1892, and later a professor of abdominal and clinical surgery at Marion Sims College of Medicine (now part of the St. Louis University School of Medicine) . He is noted for being the first American to perform the suturing of the pericardium on record. Spanish surgeon Francisco Romero was documented with performing two successful surgeries in 1801 and French surgeon Dominique Jean Larrey was documented as successfully performing surgery on a woman's pericardium in 1810.
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