John Eudes (French: Jean Eudes) (14 November 1601 – 19 August 1680) was a French Roman Catholic priest and the founder of both the Eudists and the Order of Our Lady of Charity.
He was also a professed member of the Oratory of Jesus and the author of the proper for the Mass and Divine Office of the Sacred Hearts of Jesus Christ and the Blessed Virgin.
Eudes was an ardent proponent of the Sacred Hearts and dedicated himself to its promotion and celebration; the Masses he compiled for both Sacred Hearts were both first celebrated within his lifetime.
He preached missions across France, including Paris and Versailles, while earning recognition as a popular evangelist and confessor.
Eudes was also a prolific writer and wrote on the Sacred Hearts despite opposition from the Jansenists.Eudes was canonized as a saint in mid-1925 and his supporters are now petitioning to have him named a Doctor of the Church.