U.s. physician and botanist (1779–1819).
William Baldwin (March 29, 1779 – September 1, 1819) was an American physician and botanist who is today remembered for his significant contributions to botanical studies, especially Cyperaceae. He lived in Pennsylvania, Delaware, and Georgia, and served as a ship's surgeon on two voyages overseas. He published only two scientific papers, but his major contributions were in the knowledge that he imparted to other botanists in his letters to them and in the thousands of specimens that he provided for their herbaria. He wrote letters to Henry Muhlenberg, Stephen Elliott, William Darlington, Zacc