Le monastère Sainte-Catherine du Sinaï est un important monastère orthodoxe situé sur les pentes du mont Sainte-Catherine, dans le Sud de la péninsule du Sinaï, en Égypte. C'est l'un des plus anciens monastères au monde encore en activité. Il constitue à lui seul l'essentiel du territoire de l'Église orthodoxe du Sinaï.
Il compte une vingtaine de moines, d'origine grecque pour l'essentiel.
Monastery (plural: monasteries) denotes the building, or complex of buildings, comprising the domestic quarters and workplace(s) of monastics, whether monks or nuns, and whether living in communities or alone (hermits). The monastery generally includes a place reserved for prayer which may be a chapel, church or temple, and may also serve as an oratory.
Monasteries may vary greatly in size, comprising a small dwelling accommodating only a hermit, or in the case of communities anything from a single building housing only one senior and two or three junior monks or nuns, to vast complexes and estates housing tens or hundreds. A monastery complex typically comprises a number of buildings which include a church, dormitory, cloister, refectory, library, balneary and infirmary. Depending on the location, the monastic order and the occupation of its inhabitants, the complex may also include a wide range of buildings that facilitate self-sufficiency and service to the community. These may include a hospice, a school and a range of agricultural and manufacturing buildings such as a barn, a forge or a brewery.