Pierre Richier, also Pierre Richer, dit de Lisle, (circa 1506–1580) was a French Calvinist theologian, who accompanied Philippe de Corguilleray on a French expedition to Brazil in 1556, to reinforce the colony of France Antarctique. He was a member of a contingent of 14 Calvinist people dispatched from Geneva. He later became the main actor in developing La Rochelle as a Huguenot capital. Pierre Richer was initially ordained as a Carmelite and was from the congregation of Albi. He was a member of a Paris convent, when he fled the Order for Geneva in 1556.