Bénédict Chastanier (1739 – c. 1816) was a French surgeon. In 1767 he founded a lodge of Illuminés Theosophes, based on the anonymous writings of #EmanuelSwedenborg. In 1774 he migrated to England. In 1775 Chastanier and the Marquis de Thorn joined the Philaléthes, a Masonic society founded by Savalette de Langes in #Paris. In 1776 he founded Universal Society in #London to disseminate Swedenborg's writing. In 1782 Chastanier.