Laurent-Joseph-Marius Imbert was a French Catholic bishop and missionary who served as the Vicar Apostolic of Korea during the 19th century. Born in Marignane, he joined the Paris Foreign Missions Society and traveled extensively through Malaya, Singapore, and China before arriving in Korea. Appointed by Pope Gregory XVI, he worked to support the local Christian community during a period of intense persecution. He eventually surrendered to authorities to protect his converts, leading to his execution in Saenamteo.