|Area||74.36 km2 (28.71 sq mi)|
|Length||33 km (20.5 mi)|
|Width||.25-4.75 km (0.16-2.95 mi)|
|Coastline||112.7 km (70.03 mi)|
|Highest elevation||588 m (1,929 ft)|
|Largest settlement||Mali Lo?inj (pop. 8,116)|
|Pop. density||128.5 /km2 (332.8 /sq mi)|
Lo?inj (pronounced [li:?]; Italian: Lussino; Venetian: Lusin, earlier Osero; German: Lötzing; Latin: Apsorrus; Ancient Greek: ?) 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.
A regional road runs the length of the island; ferry connections (via the island of Cres) include Brestova - Porozina, Merag - Valbiska, Mali Lo?inj - Zadar, Mali Lo?inj - Pula. There is also an airport on the island of Lo?inj.
Lo?inj is part of the Cres-Lo?inj archipelago. The Cres-Lo?inj archipelago includes Cres and Lo?inj, 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, Lo?inj is second. Cres and Lo?inj are connected by a small bridge at the town of Osor on Cres. The highest elevations are the mountains Televrin (also called Osorica) at 588 m (1,929 ft) and Sv. Nikola (also called Sv. Mikul) at 557 m (1,827 ft). The towns of Nerezine and Sveti Jakov lie at their base. The island is formed predominantly of chalk limestone and dolomite rocks. There are sand deposits in the western part of the Kurila peninsula.
Lo?inj 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 Lo?inj. 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. Average air humidity is 70%, and the average summer temperature is 24 °C (75 °F) and 7 °C (45 °F) during the winter.
The island has a mild climate and evergreen vegetation (like myrtle, holm oak, and laurel). However, as with other Mediterranean locations, Losinj is susceptible to the various Winds. Bura is the north-easterly wind that brings low temperatures and strong winds, sometimes it is strong enough to turn over heavy vehicles. Jugo is the southerly wind that originated from the Sahara, when it reaches Losinj it becomes wet, then brings along dark clouds and stormy weather. Traditionally, it is said that Dalmatians are especially affected by Jugo. It is reputed to cause aches, melancholy and sometimes lunacy. 
Settlement on nearby Cres is known to date back around 12,000 years, and the island of Lo?inj is also thought to have been inhabited since prehistoric times. This is evidenced by hill-forts at the foot of Osorica and around the port of Mali Lo?inj. According to Ptolemy, the Romans called this island Apsorrus (Ancient Greek: ?), and referred to the islands of Lo?inj and Cres collectively as Apsirtides. In several places, ruins of Roman villas have been excavated (villae rusticae: Liski, Sveti Jakov, and Studen?i? near ?unski). Several small eremitic churches dating from the Roman era have been preserved (St. Lovre? near Osor, and St. James in Sveti Jakov).In the Middle Ages, Lo?inj was the property of the clerical and secular nobility of Osor and unpopulated.
The first evidence of settlers from the mainland was in 1280. Pursuant to a contract with Osor, their settlements gained self-governance in 1389. The name Lo?inj was first mentioned in 1384. Parallel with the gradual decline of Osor from the 15th century onwards, the settlements Veli Lo?inj and Mali Lo?inj played an increasingly important role.
In the 18th and 19th centuries, trade, shipbuilding and seafaring on the island developed more intensely. In 1771, Alberto Fortis visited Cres and Lo?inj (which was then called Osero) and wrote a travelogue about his visit: Saggio d'osservazioni sopra l'isola di Cherso ed Osero. After the fall of the Republic of Venice in 1797, Lo?inj became part of the Austrian province (crown land) of Istria under the Treaty of Campo Formio. By 1900 the population had reached 11,615. In 1921, it was given as 15,000.
In 1919, Lo?inj, with its partially Italian population, became part of Italy under the terms of the Treaty of Saint-Germain, as confirmed by the 1920 Treaty of Rapallo. It was held by them until 1943 when it was occupied by German Wehrmacht and Croatian troops during World War II as part of the Operational Zone Adriatic Coast. In 1945 the island and the rest of Croatia became part of Yugoslavia, until Croatia declared independence from the Yugoslav Federation in 1991.
The post-Second World War period saw a substantial exodus (see Istrian exodus for further details) of its Italian-speaking population to Italy and to other countries. According to the last census the number of Italian-speaking citizens in Lo?inj were 557 (6.64% of the total official resident population). Before the independence of Croatia from the Yugoslav Federation, the official censuses reported the Italian-speaking minority being much smaller (figures quoted in the official census conducted in 1981 shows that the Italian minority accounted only for 1.5% of the resident population). Expatriates in Italy and around the world publish a newsletter which keeps their memories and traditions alive. On the Island Italian is popular as a second language.
Because of its temperate climate, aside from the violent Mediterranean Winds, since 2010, Losinj has started to become a tourist destination. Some Russian powers and conglomerates have invested in properties on the Island. Such activities have caused alarm on some of the locals.