The Kowloon Motor Bus Company (1933) Limited (KMB) is a bus company operating franchised services in Hong Kong. It is the largest bus company in Hong Kong by fleet size and number of bus routes, with over 4,000 buses - mostly double deckers - and 420 routes. It is a subsidiary of Transport International.

Bus services in Hong Kong have a long history. As of 2023, four companies operate franchised public bus services. There are also a variety of non-franchised public bus services, including feeder bus services to railway stations operated by MTR, and residents' services for residential estates.