Isla de la Cartuja is an island in the Guadalquivir River at Seville, Spain.

The Isthmus of Catanzaro is the narrow strip of land separating the Ionian Sea from the Tyrrhenian Sea,. It is the narrowest section of the Italian Peninsula.

The Isthmus of Corinth is the narrow land bridge which connects the Peloponnese peninsula with the rest of the mainland of Greece, near the city of Corinth. The word "isthmus" comes from the Ancient Greek word for "neck" and refers to the narrowness of the land. The Isthmus was known in the ancient world as the landmark separating the Peloponnese from mainland Greece. In the first century AD the geographer Strabo noted a stele on the Isthmus of Corinth, which bore two inscriptions. One towards the East, i.e. towards Megara, reading: "Here is not Peloponnesus, but Ionia" and the one towards the West, i.e. towards the Peloponnese: "Here is Peloponnesus, not Ionia" ; Plutarch ascribed the erection of the stele to the Attic hero Theseus, on his way to Athens.

Hugh Town is the largest settlement on the Isles of Scilly and its administrative centre. The town is situated on the island of St Mary's, the largest and most populous island in the archipelago, and is located on a narrow isthmus which joins the peninsula known as the Garrison with the rest of the island.

The Isthmus of Ierapetra is a strip of land on the Greek island of Crete which connects the easternmost municipality, Siteia, to the rest of the island. Its name comes from the largest settlement, Ierapetra (Ιεράπετρα), which is situated on the south coast.

Little Sark is a peninsula forming the southern section of the Channel Island of Sark. There is a hamlet here, and also a guesthouse and cafe at La Sablonnerie.

Mavis Grind is a narrow isthmus joining the Northmavine peninsula to the rest of the island of Shetland Mainland in the Shetland Islands, Scotland. It is just 33 metres (108 ft) wide at its narrowest point.

The Schmale Heide is a 9.5-kilometre-long and roughly 2-kilometre-wide bar between the Baltic seaside resort of Binz and the village of Neu Mukran near Sassnitz on the German island of Rügen. It lies in the municipality of Binz and is bounded to the northwest by the lagoon of the Kleiner Jasmunder Bodden and to the east by the bay of Prorer Wiek.

Vikeid is a flat isthmus on the island of Langøya in the municipality of Sortland in Nordland county, Norway. The village of Vik lies on the east side of the isthmus and the village of Frøskeland lies on the west side. The isthmus has the Eidsfjorden to the west and the Sortlandsundet strait in the east. The isthmus almost divides Langøya in two. To the north lies the northwestern part of the municipality of Sortland, and further north the municipality of Øksnes. The southwest part of the municipality of Sortland lies south of the isthmus. The Eidsfjorden and the western part of the isthmus belonged to the municipality of Hadsel until 1963, when it was transferred to Sortland.