Abu Dhabi is the capital and second most populous city in the United Arab Emirates (UAE), after Dubai.

It is also the seat of government of the emirate of Abu Dhabi, which is ruled by Khalifa bin Zayed Al Nahyan – the President of the UAE.

Abu Dhabi lies on a T-shaped island jutting into the Persian Gulf from the central western coast.

Approximately 860,000 people lived in Abu Dhabi as of 2007. One of the world's largest producers of oil, Abu Dhabi has actively attempted to diversify its economy in recent years through investments in financial services and tourism.

The emirate of Abu Dhabi is located in the oil-rich and strategic United Arab Emirates and is an active member of the Gulf Co-operation Council (GCC). It borders with the Kingdom of Saudi Arabia (south) and the Sultanate of Oman (east). The emirate borders the emirate of Dubai to its northeast. In the north is the Persian Gulf.

Abu Dhabi city is on an island located less than 250 metres from the mainland and is joined to the mainland by the Maqta and Mussafah Bridges. A third bridge, designed by Zaha Hadid, is currently under construction. Bridges connecting to Reem Island and Saadiyat Island are also under construction and should be completed in 2011.

Most of Abu Dhabi is located on the island itself, but it has many suburbs on the mainland for example: the Khalifa A, Khalifa B, Rhaha Beach, Between Two Bridges, Baniyas and Mussafah Residential.