Lošinj is a Croatian island in the northern Adriatic Sea, in the Kvarner Gulf. It is almost due south of the city of Rijeka and part of the Primorje-Gorski Kotar County. The settlements on Lošinj include Nerezine, Sveti Jakov, Ćunski, Artatore, Mali Lošinj and Veli Lošinj. A regional road runs the length of the island; ferry connections include Brestova - Porozina, M…Lošinj is a Croatian island in the northern Adriatic Sea, in the Kvarner Gulf. It is almost due south of the city of Rijeka and part of the Primorje-Gorski Kotar County. The settlements on Lošinj include Nerezine, Sveti Jakov, Ćunski, Artatore, Mali Lošinj and Veli Lošinj. A regional road runs the length of the island; ferry connections include Brestova - Porozina, Merag - Valbiska, Mali Lošinj - Zadar and Mali Lošinj - Pula. Lošinj Airport is on the island.