The canton of Ticino is located in the south of Switzerland. It is almost entirely surrounded by Italy which lies to its east, west and south. To the north lie the cantons of Valais and Uri, to the northeast the canton of Graubünden.
Its area is 2,812 km², of which about three quarters are considered productive. Forests cover about a third of the area, but also the lakes Maggiore and Lugano make up a considerable part of the total area. These lakes are known with the above listed names, but are officially named Lake Verbano and Lake Ceresio.
The canton is split geographically in two parts by the Monte Ceneri pass. The northern, more mountainous part, called Sopraceneri, is formed by the two major Swiss valleys around the lake Maggiore: Ticino Valley and Maggia Valley. The southern part, called Sottoceneri, is the region around the Lake Lugano.
The River Ticino is the largest river in the canton. It drains most of the canton, flowing from the northwest through the Bedretto Valley and the Leventina valley to enter Lake Maggiore near Locarno. Its main tributaries are the Brenno in the Blenio Valley and the Moesa in the Mesolcina Valley in Graubünden. The lands of the canton are shaped by the river, which in its mid portion forms a wide valley, commonly known as the Riviera.
The western lands of the canton, however, are drained by the Maggia River. The Verzasca Valley is located between the Ticino river and the Maggia river. There is also a smaller area that drains directly into the Lake Lugano. Most of the land is considered within the Alps, but a small area is part of the plain of the River Po which drains the north of Italy.
Canton Ticino or Ticino (Italian: [ti'tʃiːno]; French and German: Tessin [te'sɛ̃] and [te'si:n]) is the southernmost canton of Switzerland. The written language is Italian in almost the entire canton (except the Walser municipality of Bosco Gurin, where it is German). It surrounds the Italian exclave of Campione d'Italia. Together with areas of the canton of Graubünden it makes up the so-called Svizzera Italiana (Italian Switzerland). Lombard dialects (Ticinese) are still spoken, especially in the valleys, but they have no official status. It is named after the Ticino river.
Because of the tourist trade there are a number of small railways in scenic areas in the mountains. Winter sports is important, despite being less developed.