Mass Rapid Transit Authority of Thailand

Mass Rapid Transit Authority of Thailand or MRTA () is a state enterprise under the Ministry of Transport of Thailand. It is responsible the operation of rapid transit systems in the Bangkok Metropolitan Region and including other provinces as defined by the royal decree. The MRTA was founded in 1992 and underwent restructuring in 2000. The MRTA currently oversees the operation of the MRT, which consists of the operational Blue Line, Purple Line and Yellow Line. Other systems, including the Airport Rail Link, are owned and operated by other agencies.