(Danish, Jylland), a peninsula in Europe, between the Baltic and North seas. The peninsula, which has an area of approximately 40,000 sq km, is divided politically: the larger northern part belongs to Denmark, and the southern part to the Federal Republic of Germany.
The coast facing the North Sea is level. In the southwestern part of the peninsula there is a wide belt of tidal marshes; along the coast lies a band of dunes, behind which lagoons are found. The southeastern coastline is sharply broken by bays and inlets.
The peninsula is composed primarily of limestones and clays that are covered by glacial and aqueoglacial deposits. Outwash plains and gently sloping morainic hills predominate in the west. In the east, hilly moraine topography of recent origin prevails; the maximum elevation is 173 m.
Jutland has a temperate, marine climate, with an average January temperature of approximately 0°C and an average July temperature of 15°–16°C. Annual precipitation totals 600–800 mm. There is a dense network of small rivers, the largest of which is the Gudená (Gudenaa). The Kiel Canal crosses the southern part of the peninsula. Forests of beech, oak, and planted conifers occupy 9 percent of the surface. A large part of the peninsula is used for cultivating forage grasses, grains, sugar beets, and potatoes. Dairy cattle, swine, and poultry are raised, apd flatfish and eels are commercially fished. The Danish cities of Arhus and Alborg and the German city of Flensburg are located in the southern part of the peninsula.