Topolog may refer to the following features in Romania: Topolog (Danube), a tributary of the Danube in Tulcea and Constanța Counties Topolog (Olt), a tributary of the Olt in Argeș and Vâlcea Counties Topolog, Tulcea, a commune in Tulcea County Topolog Viaduct, a railway viaduct in Vâlcea County