The following list includes those communities who are in full communion with the Catholic Church, as well as groups that are not in full communion with the Holy See,[a] with these being demarcated in two main sections.
Most use a pre-1970 edition of the Roman Missal, usually 1962 Missal, but some follow other Latin liturgical rites and thus celebrate not the Tridentine Mass but a form of liturgy permitted under the 1570 papal bull Quo primum.
To clarify the fact that the Extraordinary Form of the Roman Rite has never been abrogated and expand the liturgy's use, Pope Benedict XVI issued in 2007 a motu proprio titled Summorum Pontificum.
In 2021, Pope Francis abrogated these more expansive permissions with his motu proprio Traditionis custodes, seeking to emphasize the celebration of the more commonly used Ordinary Form of the Mass.
Exclusively traditional Mass International Exclusively traditional Mass International Australia Czech Republic France Germany Ireland Italy Spain United States Not exclusively traditional Mass International Australia Canada England France Ireland Italy United States Wales Do not offer Mass themselves Exclusively traditional Mass International Australia Colombia England France Italy Liechtenstein Mexico New Zealand Spain Sweden Switzerland United States Not exclusively traditional Mass International England France Italy United States