Offagna is a comune (municipality) in the Province of Ancona in the Italian region of Marche, about southwest of Ancona. As of 31 December 2018, it had a population of 1,992 and an area of .
Offagna borders the following municipalities: Ancona, Osimo, Polverigi. It is one of I Borghi più belli d'Italia ("The most beautiful villages of Italy").