The canton of Bern or Berne is one of the 26 cantons forming the Swiss Confederation. It is composed of ten districts and its capital city is Bern which is also the federal city (de facto capital) of Switzerland. The bear is the heraldic symbol of the canton, displayed on a red-yellow background.

Bern is the second-largest canton by both surface area and population. Located in west-central Switzerland, it is surrounded by eleven cantons. It borders the canton of Jura and the canton of Solothurn to the north. To the west lie the canton of Neuchâtel, the canton of Fribourg and canton of Vaud. To the south lies the canton of Valais. East of the canton of Bern lie the cantons of Uri, Nidwalden, Obwalden, Lucerne and Aargau. The geography of the canton includes a large share of all three natural regions of Switzerland: the Jura Mountains (the Bernese Jura), the Swiss Plateau (the Bernese Mittelland) and the Alps (the Bernese Oberland).

The canton of Bern is bilingual, officially German- and French-speaking, and has a population (as of 31 December 2020) of 1,043,132. The largest city, Bern, is also the seat of the federal government of Switzerland. Other major cities are Thun and Biel/Bienne. The canton is also renowned for its numerous Alpine resort towns, notably Interlaken and Gstaad.

Formerly part of the Holy Roman Empire, the canton of Bern entered an alliance with the Swiss Forest Cantons in 1323 and joined the Old Swiss Confederacy in 1353.