The Catholic Church in Singapore is part of the worldwide Latin Roman Catholic Church, under the spiritual leadership of the Pope in Rome.
About 5.7% of Singapore's populace, or about 300,000 people, are Roman Catholics. Catholicism is practiced mainly by people of Chinese (including Peranakan) descent, along with a Eurasian (including Portuguese Kristang), Filipino, Indian, and white European minority.
Roman Catholicism in Singapore has its roots from the Portuguese established Diocese of Malacca soon after Affonso de Albuquerque's conquest of Malacca in 1511. It is believed that the first Roman Catholic priest set foot in British Singapore in 1821 to attend to the needs of the growing community consisting largely of Europeans and some Chinese; however, it is probable that there had been Portuguese missionaries operating out of Malacca in Singapore during the Portuguese period, 1511–1641, prior to the British conquest.
Acknowledged as the founder of the Catholic Church here, Father Jean-Marie Beurel was notable for initiating the building of several Catholic churches, such as the Cathedral of the Good Shepherd and for establishing the first Missionary schools in Singapore. Of the initial Missionary schools, Saint Joseph's Institution, founded in 1852, was in the care of the Lasallian Brothers while the Convent of the Holy Infant Jesus, founded in 1854, was in the care of the Sisters of the Infant Jesus. These institutions catered to students of all faiths and backgrounds and many of the non-Catholics subsequently became converts.