The Žukovačka River (Serbian: Жуковачка река / Žukovačka reka, "Žukovac River") is the largest right tributary of the Trgoviški Timok in Serbia. In its upper course it is also called Leva River (Лева река / Leva reka, "Left River") and Aldinačka River (Алдиначка река / Aldinačka reka). It flows into the Trgoviški Timok near Žukovac. Its total length is 21.3 km (13.2 mi), and its drainage basin area is 104 km (40 sq mi).