Elmer F. Jacobs (died 1945) was a Morgantown, West Virginia-based architect. He graduated from West Virginia University worked under J. I. Beatty, one of Pittsburgh, Pennsylvania's, best known architects. He came to Morgantown in 1893 and set up business. He was the leading residential architect in Morgantown, building in both Queen Anne Revival and Neo-Classical Revival styles. He also built the post office building, Seneca Glass Works, the additions to West Virginia University's Woodburn Hall, and several commercial buildings in downtown Morgantown. He was a member of the American Institute of Architects.