Karşular is a neighborhood in Tonya District, in Trabzon Province, Türkiye. Karşular lies in the Rize Dağları mountains. It has 1,133 inhabitants. The nearest city is Akçaabat, 27 km to the northeast. Among the landmarks around are Sumela Monastery (37 km), Vazelon Monastery (24 km) and Hagia Sophia (36 km). Among the natural features are Zigana Pass (28 km) and Çal Cave (7.0 km).