| Settlement Type: | Town |
| Subdivision Type: | Country |
| Timezone: | CET |
| Utc Offset: | +1 |
| Timezone Dst: | CEST |
| Utc Offset Dst: | +2 |
| Official Name: | Lébény |
| Subdivision Type1: | County |
| Subdivision Name1: | Győr-Moson-Sopron |
| Subdivision Type2: | District |
| Subdivision Name2: | Mosonmagyaróvár |
| Area Total Km2: | 81.36 |
| Population Total: | 3232 |
| Population As Of: | 2015 |
| Population Density Km2: | auto |
| Population Footnotes: | [1] |
| Postal Code Type: | Postal code |
| Postal Code: | 9155 |
| Area Code Type: | Area code |
| Area Code: | (+36) 96 |
| Blank Name: | Motorways |
| Blank Info: | M1 |
| Blank2 Name: | Distance from Budapest |
| Blank2 Info: | 145km (90miles) East |
Lébény (Latin: Quadrata or Latin: Stailuco) 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.
The Lébény area has been occupied continuously since prehistoric times. Signs of human occupation have been found from the Neolithic, through the Bronze and Iron Ages, including excavated remains of Celtic habitation. When Tiberius, later the Roman Emperor, overran Transdanubia in AD 9, he established a military camp and civilian settlement in the area of present-day Lébény.
In later centuries the region was inhabited by Huns, then by Lombards, and then by Avars, who were converted to Christianity. Excavations have confirmed there was already a sizeable community at Lébény at the time of the Hungarian Conquest of the Carpathian Basin in the 9th and 10th centuries, including Slavic groups.
The first written mention of the place was under the name Libin in 1208.[2]
Now the parish church of St James the Apostle, this Romanesque church was originally built for a community of Benedictine monks. Its nave with two aisles and three apses forms a basilica structure. The capitals of the columns inside the church are carved with plant ornamentation.