Louis-Zéphirin Moreau (1 April 1824 – 24 May 1901) was a Canadian Roman Catholic prelate who served as the fourth Bishop of Saint-Hyacinthe from 1875 until his death in 1901. He was also the cofounder of the Sisters of Saint Joseph of – an order he founded with Élisabeth Bergeron – and the founder of the Sisters of Sainte Martha. Moreau was a frail child due to being born premature and so could not help his farmer parents work on their land. He dedicated himself to his studies and later his ecclesial studies despite the fact that illness forced him to slow down his studies which impeded on his progress to ordination. But a benefactor in the Coadjutor Bishop of Montreal saw him advance towards his ordination and he served as an aide to several bishops in the diocesan secretariat and later a