Julien Maunoir (1 October 1606 – 28 January 1683) (also Julian; Breton: Juluan Maner), was a French-born Jesuit priest known as the "Apostle of Brittany".

[3] A window in Quimper Cathedral is entitled Prėsentation de Julien Maunoir à Monseigneur du Louët par Michel Le Nobletz.

It depicts Michel Le Nobletz presenting Julien Maunoir to Renė du Louët, Bishop of Cornouaille.

Maunoir used to preach (which included dramatic performances) about the pains and torments of hell, after which the new converts fell into a panic and came to confess their sins en masse.

In 1675, after the repression of the Revolt of the papier timbré by the Royal troops, Maunier proudly stated: "Fear of God was as effective as the threat of weapons".