The Gulf of Trieste is a shallow bay in the extreme northern part of the Adriatic Sea. It is part of the Gulf of Venice and is shared by Italy, Slovenia and Croatia. It is closed to the south by the peninsula of Istria, the largest peninsula in the Adriatic Sea, shared between Croatia and Slovenia. The entire Slovenian sea is part of the Gulf of Trieste.
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👉 Gulf of Trieste in the context of Trieste
Trieste (/triˈɛst/ tree-EST, Italian: [triˈɛste] ; see more) is a city and seaport in northeast Italy. It is the capital and largest city of the autonomous region of Friuli-Venezia Giulia, as well as of the regional decentralization entity of Trieste. As of 2025, it has a population of 198,668.
Trieste is located at the head of the Gulf of Trieste, on a narrow strip of Italian territory lying between the Adriatic Sea and Slovenia; Slovenia lies close, at approximately 8 km (5 mi) east and 10–15 km (6–9 mi) southeast of the city, while Croatia is about 30 km (19 mi) to the south of the city. The city has a long coastline and is surrounded by grassland, forest, and karstic areas.
In this Dossier
- ⭐ Core Definition: Gulf of Trieste
- 👉 Gulf of Trieste in the context of Trieste
- Gulf of Trieste in the context of Histri
- Gulf of Trieste in the context of Istria
- Gulf of Trieste in the context of Friuli-Venezia Giulia
- Gulf of Trieste in the context of Muggia
- Gulf of Trieste in the context of Slovene Riviera
- Gulf of Trieste in the context of Karst Plateau
Gulf of Trieste in the context of Histri
The Histri or Istri (Ancient Greek: Ἴστροι) were an ancient people inhabiting the Istrian Peninsula, to which they gave the name Histria. Their territory stretched to the neighbouring Gulf of Trieste and bordered the Iapodes in the hinterland of Tarsatica. The Histri formed a kingdom.
Gulf of Trieste in the context of Istria
Istria (/ˈɪstriə/ IST-ree-ə; Croatian and Slovene: Istra; Italian and Venetian: Istria; Istriot: Eîstria; Istro-Romanian: Istria; Latin: Histria; Ancient Greek: Ἱστρία) is the largest peninsula within the Adriatic Sea. Located at the top of the Adriatic between the Gulf of Trieste and the Kvarner Gulf, the peninsula is shared by three countries: Croatia, Slovenia, and Italy, 90% of its area being part of Croatia. Most of Croatian Istria is part of Istria County.
Gulf of Trieste in the context of Friuli-Venezia Giulia
Friuli-Venezia Giulia (Italian: [friˈuːli veˈnɛttsja ˈdʒuːlja]) is one of the 20 regions of Italy and one of five autonomous regions with special statute. The regional capital is Trieste on the Gulf of Trieste, a bay of the Adriatic Sea.
Friuli-Venezia Giulia has a population of 1,194,095 in an area of 7,924.36 square kilometres (3,059.61 sq mi) as of 2025. A natural opening to the sea for many central European countries, the region is traversed by the major transport routes between the east and west of Southern Europe. It encompasses the historical-geographical region of Friuli and a small portion of the historical region of Venezia Giulia—also known in English as the Julian March—each with its own distinct history, traditions and identity.
Gulf of Trieste in the context of Muggia
Muggia (Triestine: Muja; Friulian: Mugle; Slovene: Milje) is an Italian comune (municipality) in the regional decentralization entity of Trieste, in the region of Friuli-Venezia Giulia on the border with Slovenia. It has 12,703 inhabitants.
Lying on the eastern flank of the Gulf of Trieste in the northern Adriatic Sea, Muggia is the only Italian port town in Istria. The town's architecture is marked by its Venetian and Austrian history, and its harbour hosts a modern 500-berth marina for yachts (Porto San Rocco).
Gulf of Trieste in the context of Slovene Riviera
The Slovene Riviera (Slovene: Slovenska obala) is the coastline of Slovenia, located on the Gulf of Trieste, by the Adriatic Sea. It is part of the Istrian peninsula and is 46.6 km long. The region comprises the towns of Koper and Piran with Portorož, and the municipality of Izola. It is a seaside tourist destination, with a vibrant multiethnic Roman, Venetian, Austrian, Italian and Slovenian heritage.
Gulf of Trieste in the context of Karst Plateau
The Karst Plateau or the Karst region (Slovene: Kras, Italian: Carso), also locally called Karst, is a karst plateau region extending across the border of southwestern Slovenia and northeastern Italy.
It lies between the Vipava Valley, the low hills surrounding the valley, the westernmost part of the Brkini Hills, northern Istria, and the Gulf of Trieste. The western edge of the plateau also marks the traditional ethnic border between Italians and Slovenes. The region gave its name to karst topography. For this reason, it is also referred to as the Classical Karst.