Saint Jean-Charles Cornay, M.E.P., (27 February 1809 – 20 September 1837) was a French missionary of the Paris Foreign Missions Society who was martyred in Vietnam.
He was executed in Ha Tay, Tonkin, now Vietnam, during the persecutions of Emperor Minh M?ng.
A town in France still carries his name.
Cornay was beatified on 27 May 1900, and canonized by Pope John Paul II on 19 June 1988.