This work considers how Frenchwomen participated in Christian religious practice during the sixteenth century, with their words and their actions. Using extensive original and archival sources, it provides a comprehensive study of how women contributed to institutional, theological, devotional and political religious matters. Challenging the view of religious reforms and ideas imposed by male authorities upon women, this study argues instead that women, Catholic and Calvinist, lay and monastic, were deeply involved in the culture, meanings and development of contemporary religious practices.