A coach (also motor coach, often simply called a bus) is a type of bus used for conveying passengers on excursions and on longer distance intercity bus service between cities—or even between countries. Unlike transit buses designed for shorter journeys, coaches often have a luggage hold that is separate from the passenger cabin and are normally equipped with facilities required for longer trips, including comfortable seats and sometimes a toilet.

The term ‘coach’ was previously used for a horse-drawn carriage designed for the conveyance of more than one passenger, the passengers’ luggage, and mail, that is covered for protection from the elements. The term was applied to railway carriages in the 19th century, and later to motor coaches (buses).