Tanew is a river in south-east Poland, a tributary of San. It starts in Roztocze hills. Tanew has a length of about 114 km and its catchment area is 2339 km<sup>2</sup>. Its tributaries are: Potok à Âosiniecki (R), Jeleà  (R), Sopot (R), Szum (R), à Âada (R), Wirowa (L), Lubienia (L), Zà Âota Nitka (L), à Âazowna (L), and Borowina (L).