American Samoa
Christian Congregationalist 50%, Roman Catholic 20%,
Protestant and other 30%

Andorra
Roman Catholic (predominant)

Angola
indigenous beliefs 47%, Roman Catholic 38%, Protestant 15%
(1998 est.)

Anguilla
Anglican 29%, Methodist 23.9%, other Protestant 30.2%,
Roman Catholic 5.7%, other Christian 1.7%, other 5.2%, none or
unspecified 4.3% (2001 census)

Antigua and Barbuda
Anglican 25.7%, Seventh Day Adventist 12.3%,
Pentecostal 10.6%, Moravian 10.5%, Roman Catholic 10.4%, Methodist
7.9%, Baptist 4.9%, Church of God 4.5%, other Christian 5.4%, other
2%, none or unspecified 5.8% (2001 census)

Argentina
nominally Roman Catholic 92% (less than 20% practicing),
Protestant 2%, Jewish 2%, other 4%

Armenia
Armenian Apostolic 94.7%, other Christian 4%, Yezidi
(monotheist with elements of nature worship) 1.3%

Aruba
Roman Catholic 80.8%, Evangelist 4.1%, Protestant 2.5%,
Jehovah's Witnesses 1.5%, Methodist 1.2%, Jewish 0.2%, other 5.1%,
none or unspecified 4.6%

Australia
Catholic 25.8%, Anglican 18.7%, Uniting Church 5.7%,
Presbyterian and Reformed 3%, Eastern Orthodox 2.7%, other Christian
7.9%, Buddhist 2.1%, Muslim 1.7%, other 2.4%, unspecified 11.3%,
none 18.7% (2006 Census)

Austria
Roman Catholic 73.6%, Protestant 4.7%, Muslim 4.2%, other
3.5%, unspecified 2%, none 12% (2001 census)