The koukoulion is a traditional headdress worn by monks and certain patriarchs in Eastern Christianity.

A cowl is an item of clothing consisting of a long, hooded garment with wide sleeves, often worn by monks. It was developed during the Early Middle Ages. The term may have originally referred to the hooded portion of a cloak, though contemporary usage refers to an entire closed garment. A cowl is traditionally bestowed upon the monk at the time of making solemn, or lifetime, profession. Today, it is worn primarily by most Catholic and Anglican monks when participating in liturgical services. Similar garments are