Dan Sergiu Hanganu, CM OQ (January 27, 1939 – October 5, 2017) was a Romanian-born Canadian architect. Based in Montreal, Quebec, he designed a number of prominent Quebec buildings, including the new wing of the Pointe-à-Callière Museum, the HEC Montréal building, the concert Hall of Rimouski, the UQAM design school and several other mixed-use, commercial, residential and cultural buildings in Montreal, Europe and Asia. Hanganu was the recipient of an impressive list of awards and publications, including; the Order of Canada, the Governor General's award and was also awarded the RAIC gold medal in 2008 for lifetime achievement.