Otočac is a town in Croatia, former bishopric and present Latin Catholic titular see. It lies in the northwestern part of Lika region, in the Gacka river valley. The population of the administrative area of the Town of Otočac was 9,778 in 2011, with 4,240 in Otočac itself, the majority of whom were Croats (91%).

Lika is a traditional region of Croatia proper, roughly bound by the Velebit mountain from the southwest and the Plješevica mountain from the northeast. On the north-west end Lika is bounded by Ogulin-Plaški basin, and on the south-east by the Malovan pass. Today most of the territory of Lika is part of Lika-Senj County. Josipdol, Plaški and Saborsko are part of Karlovac County and Gračac is part of Zadar County.