Union (Arabic: اتحاد, Al-Ittihad, Arabic pronunciation: [alitiħaːd]) is a rapid transit station on the Green and Red Lines of the Dubai Metro in Dubai. It is one of two transfer stations between lines, the other being BurJuman. Since it began service, over 16.224 million passengers have used Union station, making it the busiest station on the network.
Located in the historic center of Dubai, more specifically in Deira, Union station lies below Union Square, for which it is named. It is one of the closest Metro stations to the central portion of Dubai Creek. As a result of its central location, nearby attractions and points of interest include numerous consulates, Dubai municipal government buildings, Al Ghuhair City Mall and Maktoum Hospital.
As one of two interchange points between the Green and Red Lines, Union station is one of the most complex stations of the Dubai Metro. Spanning 25,000 square metres (269,098 sq ft), it is the largest underground station in the world. Both lines utilise a side platform setup with two tracks each; the Green Line tracks approach the station from the west below Al Maktoum Road and turn northwards underneath Omar Bin Al Khattab Road, while the Red Line crosses Dubai Creek and travels below Omar Bin Al Khattab Road before turning sharply eastward underneath Al Rigga Road.