For the town in the Ukraine see Komarno
Coat of Arms of Komárno.svg

Komárno is a town in the southwest of Slovakia. It is an important, historical town which is famous for having the largest fortification in Europe.

The river Vah flows into the Danube at Komárno. The Danube at this point forms the border between the countries Slovakia and Hungary. The Hungarian name for the town is Komárom.