Isaiah Rogers (August 17, 1800 – April 13, 1869) was a U.S. architect from Massachusetts who eventually moved his practice south, where he was based in Louisville, Kentucky, and Cincinnati, Ohio. He completed numerous designs for hotels, courthouses and other major buildings in Boston, Massachusetts, and New York City, New York, before that relocation. He was appointed in 1863 as the Supervising Architect of the United States, serving into 1865; the position was then attached to the Department of the Treasury. He also practiced in Mobile, Alabama after the American Civil War.