Gérard Deltell (born August 8, 1964) is a politician in Quebec, Canada.
Deltell was the final leader of the Action démocratique du Québec (ADQ) from 2009 to the merger of the party with the Coalition Avenir Québec (CAQ) in 2012.
He was the member of the National Assembly of Quebec for the riding of Chauveau.
He was the house leader of the CAQ in the National Assembly until the provincial election in April 2014 and has served as a federal MP for Louis-Saint-Laurent since October 2015.