An ecclesiastical decoration is an order or a decoration conferred by a head of a church.
Both are recognised as legitimate ecclesiastical decorations by the International Commission on Orders of Chivalry (2006):
[T]he Commission accepts that these Ecclesiastical Decorations possess full validity as awards of merit or honours within the respective Churches which have instituted them.
The Order of Saint Michael (Bavaria) (active 1693-1918), could also be said to initially have had shared traits of an ecclesiastical decoration, as awarded by the Archbishop-Elector of Cologne.