This category is for articles regarding those religious groups—not individual persons—which are not Orthodox Christian. (See Category:Heresies for ancient and modern heresies from Church history.)

Note: Many jurisdictions make a canonical distinction (esp. with regard to baptismal practice) between those groups which acknowledge the authority of Holy Scripture and hold to an essentially Orthodox Christology (generally speaking this would include Baptists, Presbyterians, Lutherans, Methodists, free-church Evangelicals, and Charismatics) and those groups which have more in common with ancient heresies than traditional Christianity (Jehovah's Witnesses, Mormons, etc.).

Zakaria Botros

“This timeline of Orthodox Christian and Roman Catholic relations chronicles major dates which...

Timeline of Orthodox Church and Roman Catholic relations

“Heterodoxy, as opposed to Orthodoxy, is the belief in something other (hetera doksa or ετέρα...

Heterodoxy

“The Evangelical Orthodox Church (also known as the EOC) is a non-canonical group with roots in...

Evangelical Orthodox Church