Sant Aniol d'Agulla is a Benedictine monastery in Montagut i Oix, Province of Girona, Catalonia, Spain.
The monastery was founded in the year 859 by a group of Benedictine monks from St. Mary of Arles from Vallespir, which had been plundered by the Normans.
In the year 872, Racimir, the first abbot of the new monastery, obtained from the Frankish king Charles the Bald recognition of a territory, which included possession of the church of Sant Llorenç de Mont.
Sant Aniol d'Aguja was a small monastery in a secluded area with few resources, making it unable to attract a large religious community.
Pilgrims to the monastery have been replaced by hikers attracted by the natural environment of the valley,[citation needed] which bears the same name.