Theodore Delavan Wilson (also Theodore Delevan Wilson) (11 May 1840–29 June 1896) was an American naval ship designer, constructor and instructor of naval architecture and shipbuilding. As chief constructor for the Bureau of Construction and Repair from 1882 to 1892, he was in charge of all new warship design for the United States Navy. Through his efforts, the Navy began its transition out of a post–Civil War slump to become a modern naval power.