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.

Citybus Limited is a bus company which provides both franchised and non-franchised service in Hong Kong. The franchised route network serves Hong Kong Island, cross-harbour routes, North Lantau, Hong Kong International Airport, Kowloon, New Territories, Shenzhen Bay Port and Hong Kong–Zhuhai–Macau Bridge Hong Kong Port. The non-franchised routes serve mainly City One Sha Tin. It also provides bus rental services and staff bus services for some large companies, such as TVB and China Light and Power.