Uznach Abbey, Benedictine monastery in canton St. Gallen, Switzerland.

Uznach Abbey is the only monastery of the Missionary Benedictines in Switzerland, standing in Uznach in the canton of St. Gallen near the eastern shore of Lake Zurich. Its church, designed by Rapperswil architect Herbert Oberholzer and completed in 1988, has a semicircular choir with an altar, a tabernacle on the right and a cross whose arms open toward the monks' seats. The crypt and a second oratory lie in the lower floor.

On 16 September 1919 Father Adelrich Mühlebach, a Swiss member of the Missionary Benedictines, opened a house at Uznach to support missions after some 70 German confreres were expelled from German East Africa. The Fribourg house, led by prior Notker Mannhart, became independent in 1947; both were replaced by a new monastery at Uznach occupied in autumn 1963. No official foundation took place, as founding monasteries was then constitutionally forbidden. It became an abbey on 6 January 1982, with Ivo Auf der Maur as first abbot.

The monastery is named after Saint Otmar, whose feast is celebrated on 16 November. Since 1897 the abbey has published the magazine Missionsblätter five times a year, an initiative of Father Andreas Amrhein; printing moved from St. Ottilien to Uznach after the Nazis closed the German abbey.

Visitors should check ahead since visiting times align with the community's prayer schedule and need for quiet. It helps to move and speak softly to respect the monastic way of life that takes place here.

Two monks have been active in Osornoe, Kazakhstan, since October 2006, not a foundation. The monastery also keeps ties with abbeys in Tanzania, South Africa, Zambia, South Korea, the Philippines, Venezuela and Colombia.