In December 2003, Dr. Trottier received the prestigious Prix Lionel-Boulet, the Government of Quebec's highest honour for economic development in the area of applied technology. The same year, he was honoured by the Fédération de l'informatique du Québec as one of the 25 "Bâtisseurs des technologies de l'information et des communications (TIC)." In 2007, Dr. Trottier was named a Member of the Order of Canada. In 2011 and 2013, he received honorary doctorates from l’Université de Montréal and from the University of Ontario Institute of Technology (UOIT) respectively.
Dr. Trottier and the Trottier Family Foundation have also been extremely generous benefactors of McGill University over the years. The Lorne M. Trottier Building, dedicated in 2004, was the product of a $10 million gift to the university. In 2006, that was followed by a second generous donation of $12 million to establish the Lorne Trottier Chair in Astrophysics and Cosmology in the Faculty of Science, the Lorne Trottier Chair in Aerospace Engineering in the Faculty of Engineering, and associated fellowships for graduate students in both faculties.
Dr. Trottier and his family also support the Mini-Science Series as well as the Lorne Trottier Public Science Symposium Series – a series of annual lectures organized by the McGill Office for Science & Society, featuring outstanding speakers from around the world and designed "to inform, inspire debate and raise public awareness on contemporary issues confronting society today.” More recently, Dr. Trottier donated $5.5 million to the Office for Science & Society to ensure that their efforts in separating the sense from the nonsense can continue, like the Symposium, in perpetuity. In 2012 an additional gift totaling $14.5 million was announced to fund the establishment of the Trottier Institute for Science and Public Policy (“TISPP”) in the Faculty of Science and the Trottier Institute for Sustainability in Engineering and Design (“TISED”) in the Faculty of Engineering.