SMRT Corporation is a multi-modal public transport operator in Singapore operating bus and rail services. A subsidiary of the Government of Singapore's Temasek Holdings, it was established on 6 August 1987 and listed on the Singapore Exchange from 26 July 2000 until 31 October 2016. It is one of the two major operators of Singapore's rail services along with SBS Transit.

The Mass Rapid Transit system, locally known by the initialism MRT, is a rapid transit system in Singapore and the island country's principal mode of railway transportation. The system commenced operations in November 1987 after two decades of planning with an initial 6 km (3.7 mi) stretch consisting of five stations. The network has since grown to span the length and breadth of the country's main island – with the exception of the forested core and the rural northwestern region – in accordance with Singapore's aim of developing a comprehensive rail network as the backbone of the country's public transportation system, averaging a daily ridership of 3.4 million in 2019.