A coach is a bus used for longer-distance service, in contrast to transit buses that are typically used within a single metropolitan region. Often used for touring, intercity and international bus service, coaches are also used for private charter for various purposes.

Deriving the name from horse-drawn carriages and stagecoaches that carried passengers, luggage, and mail, modern motor coaches are almost always high-floor buses, with a separate luggage hold mounted below the passenger compartment. In contrast to transit buses, motor coaches typically feature forward-facing seating, with no provision for standing. Other accommodations may include on-board restrooms, televisions, and overhead luggage space.