As of 2003 there are 278.000 catholics in Thailand, which make up 0.44% of the total population.
History
The catholic church first made contact with Siam in the 16th century, however no clear documents exist about it. According to one story the Portuguese Antonio de Paiva visited the court of Ayutthaya in 1544 and converted the King to the catholic belief, and baptized to the Portugues name Dom Joâo. However there is proof of the validity of this story.
The first resident missionaries arrived in 1567. Friar Jeronimo da Cruz and Sebastiâo da Canto of the Dominican order stayed in Ayuthhaya for two years, but were then killed by Burmese troops attacking the city. 1582 to 1767Franciscan missionaries were in the country, but about their misionary work nothing is known. Since 1607Jesuits were present as well.
May 10-11 1984 Thailand was visited by Pope John Paul II, the first ever visit of a Pope to Thailand.
Administration
The church in Thailand is administrated by 10 dioceses, including two archdioceses.