The Klang Valley Mass Rapid Transit project is a planned three-line mass rapid transit (MRT) system in the Klang Valley, an urban conurbation in Malaysia which includes the capital city of Kuala Lumpur. The MRT lines, when completed, would be operated as components of the Klang Valley Integrated Transit System.

Prasarana Malaysia Berhad (Prasarana) (English: Malaysian Infrastructure Limited) is a 100% government-owned company which was set up by Ministry of Finance (Malaysia) as a corporate body established under the Minister of Finance (Incorporation) Act 1957 to own the assets of multi-modal public transport operator in Malaysia, under the government's move to restructure the city's public transport system. It is one of the largest public-transport companies in Malaysia other than Konsortium Transnasional Berhad. As a government-owned company since 1998, it operates stage bus and light metro services via several wholly owned subsidiaries.