Lošinj is part of the Cres-Lošinj archipelago in Croatia. The Cres-Lošinj archipelago includes Cres and Lošinj, and the smaller islands of Unije, Ilovik, Susak, Vele Srakane, Male Srakane and a number of uninhabited small islands.
Cres is the biggest by area, Lošinj is second. Cres and Lošinj are connected by a small bridge at the town of Osor on Cres.
Lošinj is the 11th largest Adriatic island by area, 33 km (21 mi) long, with the width varying from 4.75 km (2.95 mi) in the north and middle of the island, to 0.25 km (0.16 mi) near the town of Mali Lošinj. The total coastline of the island is 112.7 km (70.0 mi).
With around 2600 hours of sunshine a year, the island has become a popular destination for Slovenian, German and Italian tourists in the summer months.
