What Are the Different Catholic Denominations? Get the Facts


Most people associate denominations with the Protestant branch of Christianity, but some use the term to describe other congregations as well. Some of these congregations are in the Catholic communion and others, though they call themselves Catholic, aren’t. Debate surrounds calling congregations outside the Roman Catholic communion “Catholic denominations” because it implies a basic level of unity that Rome doesn’t recognize.

Some so-called “Catholic denominations,” such as Eastern Rite churches, are in communion with the Roman Catholic church. Others, like the “Reformed Catholic Church” in America, aren’t. Regional networks within the Roman Catholic Church, like the Catholic Church in Russia, shouldn’t be thought of as denominations.

What are other examples of Catholic denominations? What do they believe? How big are their memberships? How are regional networks within the Roman Catholic Church different than other Catholic denominations? Keep reading to learn more.

Catholic church
What network of congregation supports same-sex marriage? See below

Catholic denominations

In general use, the term “denomination” doesn’t convey whether a certain network of congregations are in communion with the Roman Catholic Church or not. It’s important to note that the Catholic Church doesn’t refer to congregations that aren’t in communion with them as “denominations” but consider them non-Catholic or even non-Christian.

Each network of congregations described below has its own history, and in some cases, a unique set of beliefs that doesn’t conform to the historic teachings of Roman Catholicism. Some groups split from Rome because they believed the church was too conservative. Others groups split from it because they believed it was too liberal.

American Catholic Church in the United States

The American Catholic Church in the United States (ACCUS) was founded in 1999. It’s total membership is less than 10,000 people. ACCUS congregations split with the Roman Catholic Church because they believed it was too traditional and conservative for the 21st century.

The network describes itself as “a contemporary expression of an ancient faith.” Their community “embraces a broader faith where all are welcomed and affirmed.” The network introduces itself to people like this,

“More than likely, you may be surprised to discover one of the best kept secrets in the Church Catholic – that other bodies of that same church grow and thrive independent of the institutional church.” [1]

Theology, doctrine, and biblical teaching aren’t emphasized in ACCUS congregations. Instead, the network has other priorities.

  • Issues at the forefront of their decision included beliefs about homosexuality and the practice of same-sex marriage. ACCUS congregations support progressive ideas and laws on these matters.
  • Priests aren’t paid by the congregations, but volunteer their time when ministering to others.
  • ACCUS congregations value raising awareness about clergy abuse in Catholic church.

Eastern Rite Catholic or Uniate Churches

So-called “Eastern Rite” churches, “Eastern Churches, or “Eastern Catholic Churches,” are in communion with the Roman Catholic Church. Each network of churches has its own history. It’s estimated that over 500,000 Catholics worship in Eastern Rite congregations. A “rite” refers to an order of worship or a certain liturgical tradition. Eastern Rite churches include,

  • Alexandrians: Copts, Ethiopians
  • Antiochene: Maronites, Syrians, Malankarese
  • Armenian, Chaldean: Chaldean and Malabarese
  • Byzantine: Hungarian, Yugoslav, Melkites, Ukranian
  • Ukrainian Greek Catholic Church: This network of churches practices the Eastern rite. The Ukranian Greek Catholic Church practices the Western rite.

Churches in the Eastern Rite have liturgy that is rooted in Eastern Orthodox Christianity. However, each of these networks has willingly chosen to be in communion with the Roman Catholic Church.

Each Eastern Rite network has it’s own leader, though he isn’t a pope, who is in charge of bishops, priests and congregations in their jurisdiction. Each Eastern Rite head is part of the “Congregation of Orthodox Churches” leadership group, which is a body that serves as the liaison between the Vatican in Rome and Eastern Rite churches.

How big is the Reformed Catholic Church? See below

Ecumenical Catholic Church +USA

The Ecumenical Catholic Church was founded in 2003. It’s membership is about 2,000 people, most of whom are former members of the Roman Catholic Church. It describes itself this way,

“The Ecumenical Catholic Church +USA is an Alternative Catholic Community in the Apostolic Tradition” [2]

Congregations in this network affirm their commitment to Catholic doctrine and theology but don’t recognize the infallibility of the pope. The network supports the ordination of women. It doesn’t affirm same-sex marriage.

The Ecumenical Catholic Communion

The Ecumenical Catholic Communion was founded 2003. It has about 3,000 members. The network states its mission this way,

“We profess our faith in Christ in the living Catholic Tradition handed to us from the Apostles through many generations. And we stand open to a dialogue with those of other religious identities and faith traditions.”

Though similar to the Ecumenical Catholic Church, it take more progressive stances on certain social issues. The network supports the ordination of women and marriage for clergy. It also supports same-sex marriage and performs same-sex weddings.

Polish National Catholic Church of America

The Polish National Catholic Church of America was founded in 1897. It has about 25,000 members. This network of churches started in Pennsylvania when Eastern European immigrants wanted to have church services in their own languages. Rome didn’t recognize this group and excommunicated them. The network describes their origins this way,

“During the latter part of the 19th century, there were a number of conflicts between the Polish immigrants and the Roman Catholic clergy and hierarchy in the United States. These had primarily to do with church governance issues, the control of church property, the assignment of pastors, and the pastoral accessibility to the people.” [3]

The first synod of PNCCA congregations occurred in 1904. 150 clergy attended from around the Northeast United States. The network’s first “Confession of Faith” was written in Chicago in 1914. Today, there are 5 dioceses in the PNCCA network.

In 1921, clergy were allowed to marry with bishop approval. The network opposes the ordination of women.

Reformed Catholic Church

The Reformed Catholic Church was founded in 1988. It has about 57,000 members. “Reformed” in this case doesn’t refer to “Reformed theology” that characterized some Protestant traditions like Presbyterianism. The network describes itself this way,

“The Reformed Catholic Church is an Independent Catholic Church, not under the authority of the Bishop of Rome. We are similar in our liturgy, sacraments and apostolic succession. Our heritage flows from the Catholic Church, which split with the Roman Catholic Church in 1870 over certain doctrines of the First Vatican Council.

We profess a more progressive theology, ordain men and women, offer open communion, and are fully affirming and inclusive of the LGBTQ community in the life of the Church, including Holy Orders.” [4]

The RCC network generally accepts Catholic worship, spirituality, and some of its theology. The Eucharist is available to all people no matter their membership status or sexual orientation or gender identity.

Society of Saint Pius X

The Society of Saint Pius X was founded in 1969. It has about 20,000 members. The Roman Catholic Church doesn’t recognize the network. The Society was founded by Archbishop Marcel Lefebvre, a priest in the Holy Ghost Order. Members believe that Vatican II led the Catholic church astray. The Society promotes the teachings of Vatican I instead.

What about regional Catholic churches?

Sometimes people mistakenly believe that the Roman Catholic Church’s presence in certain regional or geographical areas represent a “denomination” of the church. For example, some believe think the Romanian Catholic Church is a denomination within the Roman Catholic Church. The truth is, the name “Romanian Catholic Church” is just the name of the Roman Catholic Church in Romania.

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Daniel Isaiah Joseph

Daniel has been in Christian ministry for 25 years. He has been an Associate Pastor and a Senior Pastor. Currently in higher education, Daniel has taught more than 25 different undergraduate courses in Bible and theology-related topics.

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