Lucy Yi Zhenmei was a 19th-century Catholic missionary and catechist from Sichuan, China. Born in 1815, she dedicated her life to religious instruction, teaching both children and women in various locations including Mianyang and Chongqing. She lived an ascetic lifestyle, focusing on prayer and manual labor such as spinning. Her commitment to her faith led to her arrest and eventual execution in Guizhou in 1862, making her one of the Guizhou Martyrs.