Bosanska Otoka or just Otoka is a town on river Una in Bosnia and Herzegovina. It is part of the Bosanska Krupa municipality of the Una-Sana Canton of the Federation of Bosnia and Herzegovina.
Before the Bosnian War, the entire town was part of the Bosanska Krupa municipality, but after the Dayton Peace Agreement one part of the inhabitated area of Otoka became Otoka, Krupa na Uni, a part of municipality Krupa na Uni, divided by the Inter-Entity Boundary Line.
Otoka is located 11 km north of Bosanska Krupa, 23 km from Bužim and 22 km southwest of Bosanski Novi. Otoka is located on both banks of river Una and has 24 river isles and right and left bankside are connected with steal bridge built up 1920.