Jean-Baptiste Willermoz (10 July 1730 – 29 May 1824) was a French Freemason and Martinist who played an important role in the establishment of various systems of Masonic high-degrees in his time in both France and Germany.

He was a manufacturer in silk and silver at Rue des Quatre-Chapeaux, and as a volunteer director of charities, he played an important role in the European freemasonry of his time.

Willermoz founded in this setting, in 1763, together with his brother Pierre-Jacques, a lodge entitled "Sovereign Chapter of Knights of the Black Eagle Rose-Cross" which was devoted to alchemical research.

[2] Willermoz introduced also at the Convention of Lyon the Régime Ecossais Rectifié (Rectified Scottish Rite), which combined Templar Freemasonry with the religious ceremonial of the Elect Coëns.

He therefore urged members of the Knights Beneficent not to give any credence to him, nor to the lodge he founded in 1785 in Paris, the first mother-lodge of the Egyptian rite, whose name was "the Wisdom Triumphant".