Omegna (Italian: [oˈmeɲɲa], Lombard: [uˈmɛɲa], Piedmontese: [ʊˈmɛɲa]) is a comune (municipality) in the Province of Verbano-Cusio-Ossola in the Italian region Piedmont, located about 100 kilometers (62 mi) northeast of Turin and about 13 kilometers (8 mi) southwest of Verbania at the northernmost point of Lago d’Orta and traversed by the Nigoglia, the lake's sole outflow.

A lively street market is held every Thursday morning along the lakeside boulevard.

A daily ferry service connects Omegna with towns and villages around the lake.

The presence of ancient settlements in the area has been proved by excavations held in the frazione of Cireggio, archaeological findings dating from the late Bronze and Iron Ages.

During World War II it was a centre of partisan resistance against the German-Fascist occupation.