* [[Holy Synod of Milan]], a [[Florinites|Florinite]] church
==Churches which are "walled off"==These churches refrain from both [[concelebration]] and [[full communion|communion]] with the mainstream Orthodox churches, regarding the hierarchies of the official churches to have apostasized and placed themselves outside Orthodoxy. The view of these Old Calendarists, commonly self-designated as "True Orthodox" towards official Orthodox priests and laity varies.
==Churches by Country==