SmithGroup is an international architectural, engineering and planning firm. Established in 1853 by architect Sheldon Smith, SmithGroup is the longest continually operating architecture and engineering firm in the United States that is not a wholly owned subsidiary. The firm's name was changed to Field, Hinchman & Smith in 1903, and it was renamed Smith, Hinchman & Grylls in 1907. In 2000, the firm changed its name to SmithGroup. In 2011, the firm incorporated its sister firm, JJR, into its name, becoming SmithGroupJJR. As of August 1, 2018, the firm changed its name back to SmithGroup.

Charles Howard Crane was an American architect who was primarily active in Detroit, Michigan. His designs include Detroit's Fox Theatre and Olympia Stadium, as well as LeVeque Tower in Columbus, Ohio, which remains that city's second tallest building.