Celso Benigno Luigi Costantini (3 April 1876 – 17 October 1958) was an Italian Roman Catholic cardinal and the founder of the Disciples of the Lord who served as the Apostolic Chancellor from 1954 until his death. He became a cardinal in 1953. He is best known for his work in China. Costantini dedicated himself to improving the work of missionaries and believed that evangelization in China belonged to the Chinese people. His time there heralded countless successes and he was careful never to involve himself in the complex politics between the Church and the state.