The Hyundai Rotem J151 is the first generation electric multiple unit rolling stock to be introduced on the Jurong Region Line of Singapore's Mass Rapid Transit (MRT) system, manufactured by Hyundai Rotem under Contract J151. 62 three-car medium-capacity Hyundai Rotem trainsets will be delivered from 2024 onwards and service will commence when the line opens in 2027.

The Jurong Region Line (JRL) is a Mass Rapid Transit (MRT) line under development that will serve the western parts of the country, particularly the new town of Tengah and its surrounding areas. First envisioned as a Light Rail Transit (LRT) line in 2001, it was put on hold throughout the 2000s before its current iteration as a MRT line was confirmed in 2013. The line is set to open in stages from 2027 to 2029. It will be the first MRT line to be fully elevated, and the fifth MRT line to be completely automated and driverless.