Lébény is a town in Győr-Moson-Sopron County, midway between Mosonmagyaróvár and Győr, Hungary. It has a Romanesque monastic church commenced in 1208. Similar family or clan-financed medieval Hungarian monastic churches can be found in Ják, Ócsa, Nyírbátor, Harina and Mălâncrav.
St. James's parochial church was originally built for a community of Benedictine monks. Its nave with two aisles and three apses form a basilica structure. The capitals of the columns inside are carved with plant ornamentation.