The Catholic Church in Hong Kong, established in 1841, is part of the worldwide Catholic Church, under the spiritual leadership of the Pope in Rome. All Catholics in Hong Kong are under the Diocese of Hong Kong, which is a de jure suffragan diocese of the Archdiocese of Guangzhou. However, in practice it is an immediate subject of the Holy See.

Joseph Zen Ze-kiun, SDB is a retired Chinese cardinal of the Catholic Church who served as Bishop of Hong Kong from 2002 to 2009. He was made a cardinal by Pope Benedict XVI in 2006 and has been outspoken on issues regarding human rights, political freedom, and religious liberty.