The Mirna () is a river in Istria, Croatia. In ancient times it was called the Aquilis. It is Istria's longest and richest river, being long and having a basin covering an area of . It rises near Buzet, passes along Motovun and empties into the Adriatic Sea at Antenal, near Novigrad.
References
Further reading
External links Development of the Mirna River Basin Management Plan Geological & hydrological data