Topľa
 Topľa (Hungarian: Tapoly German: Töpl) is a river in eastern Slovakia and right tributary of Ondava. It is 129.8 km long and its basin covers an area of 1503 km². It rises in the Čergov mountains flows through Ondava Highlands Beskidian Piedmont Eastern Slovak Hills and Eastern Slovak Flat and flows into Ondava in the cadastral area of Parchovany. It flows through towns of Bardejov Giraltovce Hanušovce nad Topľou and Vranov nad Topľou.