Loisail (French pronunciation: [lwazaj] ) is a commune in the Orne department in north-western France.

• Carrière de Loisail is a Natura 2000 conservation site measuring 0.17 Hectares. The site is the leading bat hibernation site in Normandy in terms of numbers with 1,300 counted. The bats live in the former limestone quarries from the 19th centaury, which then became mushroom farms in 1955 up until 1980, when the area was abandoned. The site now hosts six varieties of bats, listed in Annex 2 of the Habitats Directive, which are the Greater horseshoe bat, Lesser horseshoe bat, Western barbastelle, Geoffroy's bat, Bechstein's bat and the Greater mouse-eared bat.

The Commune has three buildings and areas listed as a Monument historique.

• Saint-Martin Church a sixteenth century church that was registered as a monument in 1905.
• Romanesque house a twelfth century house, registered as a Monument historique in 1974.
• Loisail Manor a sixteenth century Manor house, registered as a Monument historique in 1992.

• Communes of the Orne department