This study aimed through a comprehensive survey to identify and list all the Catholic churches in Hong Kong, which existed during the period from 1841 to the early 1940s. The criteria to analyze are “use,” “existence of space solely reserved for religious activities,” and “building owner,” which signify traits of the churches in Hong Kong rather than architectural style and structure. The study revealed that the majority of churches were “mission stations” whereas proper churches were also built. The chapels of convents, schools, and hospitals were utilized for public worship. Many churches were accompanied by educational and/or welfare facilities.