PostAuto Switzerland, PostBus Ltd. (known as PostAuto Schweiz in Swiss Standard German, CarPostal Suisse in Swiss French, AutoPostale Svizzera in Swiss Italian, and AutoDaPosta Svizra in Romansh is a subsidiary company of the Swiss Post, which provides regional and rural bus services throughout Switzerland, and also in France, Germany, and Liechtenstein.

The Italian language in the Italian Switzerland or Swiss Italian is the variety of the Italian language taught in the Italian-speaking area of Switzerland. While this variety is mainly spoken in the canton of Ticino and in the southern part of Grisons, Italian is spoken natively in the whole country by about 700,000 people: Swiss Italians, Italian immigrants and Swiss citizens with Italian citizenship.