Dennis Day was born in Grand Falls, Newfoundland in 1960. He studied classical music and psychology before graduating in media-based art from the Ontario College of Art in Toronto.

He has produced numerous video works known for their strong use of editing, rich colours and humour. He has won a number of prizes including the CALQ award in Quebec (2002), the Bulloch Award for Best Canadian Film at the Inside/Out Festival in Toronto (1997), and the VideoFest Award in Berlin, Germany (1995). He has participated in numerous gallery and museum exhibitions including the Museum of Modern Art and the National Gallery of Canada. Television broadcasts include: PBS (USA), TV Ontario, CBC, Vision TV (Canada), NHK (Japan) and Canal Plus (France).