Pilica is a river in central Poland, the longest left tributary of the Vistula river, with a length of 319 kilometres (8th longest) and the basin area of 9,273 km2 (all in Poland).It flows through the Polish Jura, after which it enters Central Polish Plains. Pilica flows into the Vistula near the village of Ostrowek, in a geographical region of Central Vistula Valley.