Ujście-Łęg [ˈui̯ɕt͡ɕɛ ˈwɛnk] is a settlement in the administrative district of Gmina Ujście, within Piła County, Greater Poland Voivodeship, in west-central Poland. It lies approximately 7 kilometres (4 mi) south-west of Ujście, 14 km (9 mi) south-west of Piła, and 74 km (46 mi) north of the regional capital Poznań.