Jean-François Blanchard is a Canadian French voice actor known primarily for his work in dubbing for film and animation. His career in voice performance is documented through his contributions to major Hollywood productions, providing French-language tracks for Quebec and Canadian audiences.

Blanchard is recognized for providing the voice of Cogman in the Canadian French dub of the 2017 film Transformers: The Last Knight. Cogman is the loyal butler and headmaster to Sir Edmund Burton, a character depicted with a dry wit and a hidden temper. In this production, Blanchard's performance was part of a larger cast that included other French-language voice actors for characters such as Optimus Prime, Megatron, and Bumblebee.

His work extends to animation, where he voiced Professor Robert Callaghan in the Canadian French version of the 2014 Disney animated film Big Hero 6. Professor Callaghan is a mentor figure in robotics who serves as the film's central antagonist. This role represents a notable contribution to a major animated feature, showcasing his range in voice acting for different genres.

Based on available records, Blanchard's documented work consists of these specific dubbing credits. Information regarding additional roles, including the part of Monsignor Chamberlain in the series Priest, or details about recurring collaborations with specific directors or other voice actors is not available within the provided sources.