Maryse Lassonde OC CQ FRSC (born January 5, 1954) is a Canadian academic and neuropsychologist.
She holds the Canada Research Chair in Developmental Neuropsychology at the Université de Montréal and the University Hospital Center Sainte-Justine researching brain disorders.
In 1993, she became President of the French Canadian Association for the Advancement of Sciences (ACFAS).
In 1999, she was made a Knight (Chevalier) of the National Order of Quebec.
She was made an Officer of the Order of Canada (OC) in June 2012.