The Dubai Metro (in Arabic: مترو دبي) is a driverless, fully automated metro rail network in the United Arab Emirates city of Dubai. The Red Line and Green Line are operational, with three further lines planned. These first two lines run underground in the city centre and on elevated viaducts elsewhere (elevated railway). All trains and stations are air conditioned with platform edge doors to make this possible.

The first section of the Red Line, covering 10 stations, was ceremonially inaugurated at 9:09:09 PM on 9 September 2009, by Mohammed bin Rashid Al Maktoum, Ruler of Dubai, with the line opening to the public at 6 AM on 10 September. The Dubai Metro is the first urban train network in the Arabian Peninsula. More than 110,000 people, which is nearly 10 per cent of Dubai’s population, used the Metro in its first two days of operation. The Dubai Metro carried 10 million passengers from launch on 9 September 2009 to 9 February 2010 with 11 stations operational on the Red Line.

Guinness World Records has declared Dubai Metro as the world's longest fully automated metro network spanning at 75 km.

Dubai (/duːˈbaɪ/ doo-BY; Arabic: دبيّ‎ Dubeii; IPA: [du'beii]) is an emirate within the United Arab Emirates (UAE). A city within the emirate is also named Dubai. The emirate is located south east of the Persian Gulf on the Arabian Peninsula and has the largest population with the second-largest land territory by area of all the emirates, after Abu Dhabi. Dubai and Abu Dhabi are the only two emirates to have veto power over critical matters of national importance in the country's legislature. Dubai City is located on the emirate's northern coastline.

The earliest mention of Dubai is in 1095, and the earliest settlement known as Dubai town dates from 1799. Dubai was formally established in 1833 by Sheikh Maktoum bin Buti al Maktoum when he persuaded 800 members of the Bani Yas tribe, living in what is now part of Saudi Arabia, to follow him to the Dubai Creek by the Al Abu Falasa clan of Bani Yas. It remained under clan control when the United Kingdom assumed the protection of Dubai in 1892. Its geographical location made it an important trading hub and by the beginning of the 20th century, it was an important port.