Aloys Pfister (April 24, 1833 - May 17, 1891), also known as Louis Pfister, or in China, Fei Lai Zhi (費賴之) was a French Jesuit missionary, priest, historian, and sinologist active in the Shanghai region, China. Pfister was born in Gerbeviller, Meurthe, France. He joined the Society of Jesus in 1852, after which, in 1867, he was sent to the Kiang-non Mission. Within that mission he spent many years ministering to the inhabitants of Hai-men (海门), and the alluvial island of Chongming (崇明岛). Although he had many converts, he did not consider himself successful relative to the overall population. In 1881, he retired to the mission house and library at Xujiahui Library (Zi-ka-wei), southwest of Shanghai. He remained there until 1889, when in failing health, he moved to Shanghai. There in 1891, he died of heart disease. He is best known for this Notices biographiques et bibliographiques sur les Jésuites de l'ancienne mission de Chine. 1552–1773, a history of early Jesuit missionary work in China.