中国天主教爱国会
The term underground church () is used to refer to Chinese Catholic churches in the People's Republic of China which have chosen not to associate with the state-sanctioned Chinese Patriotic Catholic Association, they are also called "loyal church" (). Underground churches came into existence in the 1950s, after the communist party's establishment of the People's Republic of China, due to the severing of ties between Chinese Catholics and the Holy See.