Ailly

Ailly is the name of four communes in France:
 Ailly, Eure, in the Eure department
 Ailly-le-Haut-Clocher, in the Somme department
 Ailly-sur-Noye, in the Somme department
 Ailly-sur-Somme, in the Somme department

 People 
 Pierre d'Ailly (1351–1420), a French theologian