The Taro (Latin Tarus) is a river in Emilia-Romagna, in northern Italy. It is a tributary of the Po and is 126 kilometres (78 mi) long. It flows almost entirely in the province of Parma, west of the city Parma. The Taro flows into the Po near Gramignazzo, a frazione of the comune of Sissa, north of Parma.The Val di Taro, or Taro valley, the drainage basin of the river, occupies an area of 2,026 square kilometres (782 sq mi).