Newport Bus (the operating name of Newport Transport Limited) is the main provider of bus services in the city of Newport, Wales. A limited company whose shares are wholly owned by Newport City Council, it is one of the few remaining municipal bus companies in the United Kingdom.

In 1901, the Newport Corporation took over the town's horse-drawn bus service, establishing a municipal bus operation.

Motorbus services began in April 1924, although the corporation was prohibited from running services beyond Rogerstone and Langstone without the assent of local councils by the Newport Corporation Act 1925. This prohibition was removed in 1981, allowing then-Newport Borough Council to operate more extensive services.

By 1985, the Borough Transport Department held responsibility for the town's bus services. Following passage of the Transport Act 1985, which deregulated the UK bus network and required local councils to transfer the functions of their bus operations to commercial entities, a stand-alone company limited by shares was incorporated on 10 March 1986. Initially named Newport Buses Ltd, the company was renamed Newport Transport Ltd on 9 October 1986, before formally taking over operation of bus services in Newport from the Borough Transport Department on 26 October 1986.

In the 1980s, Newport Transport was the largest operator of Scanias in the United Kingdom. It also operated Renault 50 midibuses.

They also introduced their 'Nipper' bus; it was a midibus fleet (smaller buses) operated by Newport Transport The ‘Nipper’ was a branding for the smaller Alexander Dennis Enviro 200 and Dennis Dart SLF vehicles. However, that branding is sadly no longer in use. These compact little buses were well-suited for narrow residential streets, estates, community feeders, and off-peak services. The first ‘Nipper’ bus service was introduced in 1987, and the service originally operated on routes 1A/C and 17A/C/X serving Rogerstone and Mount Pleasant.

Late 1980s to 1990s. The ‘Nipper’ branding was in its full glory on midibuses, seen regularly around the town and on Route 30 specials. Early 2000s. There was a continued presence on Route 30 (especially Sunday/evening journeys) with Optare MetroRiders and Dennis Darts. By 2008–2010. As newer low-floor buses came in and Newport Bus unified its fleet livery (2009), the dedicated Nipper branding faded away. they were very useful for short journeys an ideal for going round the various estates in Newport.

The bus operation was rebranded from Newport Transport to Newport Bus in 2011.^{[citation needed]}