St Saviour's Priory (Irish: Mainistir an tSlánaitheora)[1] is a ruined Augustinian monastery in Glendalough, County Wicklow, Ireland.

The priory was likely founded c. 1162, which is when Lorcán Ua Tuathail, also known as St. Laurence O'Toole the founder, was made Archbishop of Dublin.

[4] It is located three quarters of a mile to the east of the city, on the South bank of the river flowing from the two lakes,[5] on a narrow floodplain to the south-east of the core of the Glendalough monastic site.

The priory's relative isolation from the rest of the campus is thought to be a result of resentment towards the Augustinians by the long-established monastic community who occupied the site.

[6] St Saviour's monastery or priory consists of three parts, the nave, the chancel and a domestic room to the north side.

The windows on the south side have an external reveal or casement which may have held a timber shutter.

[10] At the time when the building was taken into care by the Office of Public Works in 1875, it was in poor condition with few walls in excess of 2.0m high, and it was buried under heaps of rubbish, and tangled vegetation.