A minibus or minicoach is a passenger carrying motor vehicle that is designed to carry more people than a multi-purpose vehicle or minivan, but fewer people than a full-size bus. In the United Kingdom, the word "minibus" is used to describe any full-sized passenger carrying van. Minibuses have a seating capacity of between 8 and 30 seats. Larger minibuses may be called midibuses. Minibuses are typically front-engined step-entrance vehicles, although low floor minibuses do exist.

Minibuses are used for a variety of reasons. In a public transport role, they can be used as fixed route transit buses, airport buses, flexible demand responsive transport vehicles, share taxis or large taxicabs. Accessible minibuses can also be used for paratransit type services, by local authorities, transit operators, hospitals or charities. Private uses of minibuses can include corporate transport, charter buses, tour buses. Schools, sports clubs, community groups and charities may also use minibuses for private transport. Individual owners may use reduced seating minibuses as cheap recreational vehicles.