| | Centennial Encyclopaedia of the African Methodist Episcopal Church - Compiled by Richard R. Wright, Jr. Reference work published in 1916. |
| | Christian Cyclopedia - Electronic version of the one volume print resource from Concordia Publishing House of The Lutheran Church-Missouri Synod. Includes history, theology, and biographies from within Lutheranism, general Christianity, and non-Christian beliefs. |
| | Cyclopaedia of African Methodism - An encyclopedia of the African Methodist Episcopal Church, published in 1882. |
| | Divine Digest - A quick reference guide to the major World Religions. |
| | Early Church Online Encyclopedia - Hypertext encyclopedia of the early Christian Church up to the Reformation. |
| | Encyclopedia Of Hinduism - A 18 volume Encyclopedia on Hinduism. |
| | Global Anabaptist Mennonite Encyclopedia Online - English-language information on Anabaptist-Mennonite historical, theological, biographical and institutional topics. Secular subject articles are also included. |
| | Indian Christianity - Provides information/research aids for Christianity in India, through St Thomas Christian Encyclopaedia of India, and the Indian Church History Classics. |
| | Jewish Encyclopedia - Contains the complete contents of the 1906 Jewish Encyclopedia. Over 15,000 articles and pictures about the Torah, history, literature, biography, geography, genealogy, and theology. Accessible for free and full-text searchable. |
| | Mennonites in Canada - Includes Canadian Mennonite Encyclopedia Online as well as an introduction to Mennonites in Canada. |
| | New Schaff-Herzog Encyclopedia of Religious Knowledge by Philip Schaff - Digital facsimile edition of the 1952 print edition. Includes an alphabetical index. |
| | Spiritual Encyclopedia - Covering the most important topics for all spiritual traditions and paths on your way to god. Brief but comprehensive explanation of divine words and principles governing the creation. |
| | Thelemapedia - Explore hundreds of topics in this open source encyclopedia dedicated to the religion of Thelema. |
| | World Christian Database - Statistical information on world religions, Christian denominations, and people groups. Based on the 2600-page World Christian Encyclopedia and World Christian Trends. A full-time staff at The Center for the Study of Global Christianity updates and mai |
| | World Wide Encyclopedia of Christianity - Links to the contents of the Catholic Encyclopedia, Easton's Bible Dictionary, Torrey's Topical Textbook, Elwell's Dictionary of Christian Theology, and other sources. |