The Viișoara is a left tributary of the river Prahova in Romania. It discharges into the Prahova near Palanca.Viisoara (jud. Prahova), e-calauza.ro It flows through the villages Târgșoru Nou, Târgșoru Vechi, Puchenii Mici and Puchenii Mari. Its length is and its basin size is .
References