The Green Line is a planned metro service in Lagos, Nigeria owned by Lagos Rail Mass Transit run by the Lagos Metropolitan Area Transport Authority (LAMATA). The line will run 68 km from Marina to the Lekki Free Trade Zone, with a connection to the Blue and Red Lines at Marina. It will serve key areas, including Victoria Island, Lekki and Ajah. China Harbour Engineering Company (CHEC) and the Ministry of Finance Incorporated (MOFI) are the two companies to initiate construction, with the companies leading on design, financing, and operation of the Green Line. On April 10, 2025, the state government unveiled the full plan for the Green Line, with an expected initial ridership of 500,000, as well as intent to complete the line in one phase.