Basel-Landschaft or Basel-Country, informally known as Baselland or Baselbiet (; German: Kanton Basel-Landschaft [ˈkantɔn ˌbaːzl̩ ˈlantʃaft] (listen); Romansh: Chantun Basilea-Champagna; French: Canton de Bâle-Campagne; Italian: Canton Basilea Campagna), is one of the 26 cantons forming the Swiss Confederation. It is composed of five districts and its capital city is Liestal. It is traditionally considered a "half-canton", the other half being Basel-Stadt, its urban counterpart.

Basel-Landschaft is one of the northernmost cantons of Switzerland. It lies essentially south of the Rhine and north of the Jura Mountains. The canton shares borders with the canton of Basel-Stadt to the north, the canton of Aargau to the east, the canton of Solothurn to the south and the canton of Jura to the west. It shares international borders as well with France and Germany to the north.

Together with Basel-Stadt, Basel-Landschaft was part of the canton of Basel, which joined the Old Swiss Confederacy in 1501. Political quarrels and armed conflict led to the partition of the canton in 1833.