Julita Abbey, Medieval Cistercian monastery in Katrineholm Municipality, Sweden

Julita Abbey was a Cistercian monastery founded at Viby in 1160 and moved to Säby by Lake Öljaren in 1180 or 1185. Today only a small part of the abbey survives in the basement of a wing of Julita Manor, which is open to the public; archaeological excavations have revealed the full extent of the main buildings.

Founded in 1160 at Viby near Sigtuna by monks from Alvastra Abbey, on land given by Doter and her son Gere, the monastery moved to Säby by Lake Öljaren under King Knut Eriksson, who became its patron and granted land and shares in the Älvkarleby fishery. Its church burned and was reconsecrated on 7 March 1382. In 1527 Gustav Vasa gave the abbey in fief to Olof Arvidsson, bailiff of Nyköping.

The abbey's name alternates between Julita and Säby, Latinised as Saba, after the estate by Lake Öljaren. It was for a time a pilgrimage site and handled the collection of Peter's Pence. The papal legate Marinus de Fregeno granted it extensive indulgences in 1461, drawing pilgrims and income.

The abbey itself survives only as a small part of a wing basement of the present manor, open to the public; the rest of the medieval layout is known from archaeological excavations, not from standing ruins. The estate is now the open-air museum of Julita gård, so plan to walk between the manor buildings and the lake Öljaren shore.

The abbey church burned down and was reconsecrated on 7 March 1382. The papal legate Marinus de Fregeno granted the abbey extensive indulgences in 1461, and the monastery also collected Peter's Pence for a time.