Brad Cloepfil (born 1956) is an American architect, educator and principal of Allied Works Architecture of Portland, Oregon and New York City. His first major project was an adaptive reuse of a Portland warehouse for the advertising agency Wieden+Kennedy. Since 2000, Cloepfil and Allied Works have completed cultural, commercial and residential projects including the Contemporary Art Museum St. Louis, the University of Michigan Museum of Art, the Dutchess County Residence Guest House and the Museum of Arts and Design. Recent and notable works include the Clyfford Still Museum in Denver, Colorado, completed in November 2011, and the National Music Centre of Canada in Calgary, Alberta, which opened in July 2016.