The Macau Light Rapid Transit is a mass transit system in Macau and is also the first railway system in Macau. The first phase of the project started construction in February 2012, and the first section of the Taipa line was opened to the public on 10 December 2019, followed by the Barra Station Extend Line on 8 December 2023. MTR (Macau), a wholly-owned subsidiary of MTR, was operating and maintaining the MLRT under the operations and maintenance assistance services, until it expires in December 2024. Macao Light Rapid Transit Corporation, Limited (MLM) is directly responsible for the operations and maintenance assistance services of the MLRT from 1 April 2024.

Macau or Macao is a special administrative region of the People's Republic of China. With a population of about 680,000 and an area of 32.9 km2 (12.7 sq mi), it is the most densely populated region in the world.