Rapid Metro Gurgaon is a light rapid transit system serving the city of Gurgaon, Haryana, India. Rapid Metro connects the commercial areas of Gurgaon, and acts as a feeder link to the Delhi Metro with an interchange with its Yellow Line at Sikandarpur Metro Station.

Built by Rapid Metro Gurgaon Limited (RMGL), the system was the world's first fully privately financed modern light metro system. The venture did not have any investment from the Union Government, Government of Haryana or any public sector undertaking. However, it was not the first fully privately financed rapid transit system, as the Metropolitan Railway was privately financed. Originally planned to open in 2012, the first phase of the system opened on 14 November 2013. The second phase of the project began commercial operation on 31 March 2017. In September 2019, IL&FS announced that it does not have the resources to continue running the Rapid Metro due to financial issues with the company and is looking for another entity to fund and takeover operations. After a short dispute with the Haryana government and a court ruling from the Punjab and Haryana High Court, the Delhi Metro Rail Corporation took over the operation of the line from IL&FS.

Rapid Metro has a total length of 11.7 kilometres serving 11 stations. The system is fully elevated using standard-gauge tracks. The trains are composed of three cars. The power is supplied by 750 volt direct current through third rail. Services operate daily between 06:05 and 22:00 running with a headway of four minutes. The metro system was the first in India to auction naming rights for its stations.