Martin Felsen (born 1968) is an American architect and Fellow of the American Institute of Architects (FAIA). He directs UrbanLab, a Chicago-based architecture and urban design firm. Felsen's projects range in scale from houses such as the Hennepin, Illinois Residence, mixed-use residential and commercial buildings such as Upton's Naturals Headquarters, public open spaces such as the Smart Museum of Art Courtyard at the University of Chicago, and large scale, urban design projects such as Growing Water in Chicago and a masterplan (13 square kilometers / 5 square miles) for the Yangming Lake region of Changde, China. Felsen was awarded the 2009 Latrobe Prize by the American Institute of Architects, College of Fellows.