Martynas Liudvikas Rėza (Martin Ludwig Rhesa, 1776–1841) is not only one of the most famous Lithuanian in the history of Lithuanians writings, but also a famous member of the Königsberg Masonic lodge Zu den drei Krönen, who has been astonished by the amplitude of his interests and the abundance of his works that still surprising. The range of activities of Rėza, his literary ambition range are wide – from the religious writings to the publishing of secular literature and folklore. Carefully going into the professors’ Lithuanian activities, the aspect of Rėza’s Masonry is important. Masonic echoes are found in Rėza’s publishing activities, correspondence and in relationships with well-known scholars and writers. The article aims to look more closely at the Masonic relations of Rėza in his Lithuanian activities.