This article deals with the state. For the landscape name, see Switzerland (landscape name).

Switzerland (French Suisse [sɥis(ə)], Italian Svizzera [ˈzvitːsera], Rhaeto-RomanicAudio-Datei / Hörbeispiel Svizra? /i [ˈʒviːtsrɐ] or [ˈʒviːtsʁɐ], Latin Helvetia), officially Swiss Confederation (French Confédération suisse, Italian Confederazione Svizzera, Rhaeto-Romanic Audio-Datei / HörbeispielConfederaziun svizra? /i, Latin Confoederatio Helvetica), is a federal democratic state in Central Europe. It borders Germany to the north, Austria and Liechtenstein to the east, Italy to the south, and France to the west.

Switzerland is home to 8.6 million people. This makes the country one of the more densely populated states in Europe, with the population concentrated in the Central Plateau, the basin zone between the Jura and the Alps, and in southern Ticino. The eight largest cities or economic centers are Zurich, Geneva, Basel, Bern, Lausanne, Winterthur, Lucerne and St. Gallen.

The country shares three major language areas: the German-speaking one in German-speaking Switzerland, the French-speaking one in French-speaking Switzerland (Suisse romande, Westschweiz, Welschschweiz) and the Italian-speaking one in Italian-speaking Switzerland; Rhaeto-Romanic is added as a fourth language area (in parts of the canton of Graubünden). The four languages mentioned are the official languages of the Confederation. In order not to favor any single one, the country code is "CH", the abbreviation of the Latin term Confoederatio Helvetica.

The Swiss Confederation is a federal state consisting of 26 partly sovereign cantons. The seat of government and parliament is the federal city of Bern. Switzerland is considered a nation of wills; national identity and cohesion are not based on a common language, ethnic origin or religion, but on intercultural factors such as a belief in direct democracy, a high degree of local and regional autonomy, and a strong culture of compromise in political decision-making. Moreover, permanent neutrality is fundamental to the self-image.

The Swiss Confederation emerged from the so-called original cantons of Uri, Schwyz and Unterwalden. The unofficial and mythologized founding document is the Bundesbrief of 1291, the oldest surviving alliance document. The Peace of Westphalia of 1648 recognized their independence under constitutional law. Today's federal state has existed since 1848. The name Switzerland comes from the original canton of Schwyz or its capital of the same name.

On the Human Development Index, Switzerland ranked second in 2019, making it one of the very highly developed countries. Although it ranks 133rd in terms of country size and 98th in terms of population, it holds the 20th position among the largest economies in the world.