Joseph Colt Bloodgood (1 November 1867 – 22 October 1935) was a prominent surgeon in the United States based in Johns Hopkins Hospital in Baltimore, Maryland.
He was known for insisting on the use of rubber gloves by the entire surgical team, for advances in methods of identifying and treating benign and malignant cancers, particularly breast and bone cancers, and for advocating education of the public so they would seek routine medical examinations, even before any signs of cancer appeared.