Khalifa bin Zayed al Nahyan

In April 2016, Sheikh Khalifa was named in the Panama Papers by the International Consortium of Investigative Journalists; he reportedly owns luxury properties in London worth more than $1.7 billion via shell companies that Mossack Fonseca set up and administers for him in the British Virgin Islands.

In January 2014, Khalifa suffered a stroke but was in a stable condition. He has since assumed a lower profile in state affairs, but retained ceremonial presidential powers. His half brother Sheikh Mohammed bin Zayed Al Nahyan now carries out public affairs of the state and day-to-day decision-making of the Emirate of Abu Dhabi.

Later that year Khalifa was ranked as the world's fourth-wealthiest monarch, with a fortune estimated to be worth $15 billion. In 2013, he commissioned Azzam, the longest motor yacht ever built at 590 ft (180 m) long, with costs between $400–600 million.

In March 2011, Khalifa sent the United Arab Emirates Air Force to support the military intervention in Libya against Muammar Gaddafi, alongside forces from NATO, Qatar, Sweden and Jordan.

In 2010, Khalifa was described in a WikiLeaks cable signed by then U.S. ambassador Richard G. Olson as a "distant and uncharismatic personage." On 4 January 2010, the world's tallest man-made structure, originally known as Burj Dubai, was renamed the Burj Khalifa in his honor.

On 1 December 2005, the President announced that half of the members of the Federal National Council (FNC), an assembly that advises the president, would be indirectly elected. However, half of the council's members would still need to be appointed by the leaders of the emirates. The elections were set to take place in December 2006.

Sheikh Khalifa succeeded his father, Zayed bin Sultan Al Nahyan, as Emir of Abu Dhabi on 2 November 2004 and became the President of the UAE the next day. As Crown Prince, he had already de facto carried out some aspects of the presidency since the late 1990s while his father was facing health problems.

Seychellois government records show that since 1995 Sheikh Khalifa has spent $2 million buying up more than 66 acres of land on the Seychelles' main island of Mahé, where his palace is being built. The Seychelles' government has received large aid packages from the UAE, most notably a $130 million injection that was used in social service and military aid, which funded patrol boats for the Seychelles' antipiracy efforts. In 2008, the UAE came to the indebted Seychelles government's aid, with a $30 million injection.

In May 1976, he became deputy commander of the UAE Armed Forces, under the President. He also became the head of the Supreme Petroleum Council in the late 1980s, and continues in this position today, which grants him wide powers in energy matters. He was also the chairman of the Environmental Research and Wildlife Development Agency.

Following the establishment of the UAE in 1971, Khalifa assumed several positions in Abu Dhabi: Prime Minister, head of the Abu Dhabi Cabinet (under his father), Minister of Defense, and Minister of Finance. After the reconstruction of the Cabinet of the United Arab Emirates, the Abu Dhabi Cabinet was replaced by the Abu Dhabi Executive Council, and Khalifa became the 2nd Deputy Prime Minister of the United Arab Emirates (23 December 1973) and the Chairman of the Executive Council of Abu Dhabi (20 January 1974), under his father.

On 1 February 1969, Khalifa was nominated the Crown Prince of Abu Dhabi, and on the next day he was appointed Head of the Abu Dhabi Department of Defense. In that post, he oversaw the build up of the Abu Dhabi Defense Force, which after 1971 became the core of the UAE Armed Forces.

When his father, Zayed, became Emir of Abu Dhabi in 1966, Khalifa was appointed the Ruler's Representative (the mayor) in the Eastern Region of Abu Dhabi and Head of the Courts Department in Al Ain. Zayed was the Ruler's Representative in the Eastern Region before he became the Emir of Abu Dhabi. A few months later the position was handed to Tahnoun bin Mohammed Al Nahyan.

Khalifa bin Zayed bin Sultan Al Nahyan (Arabic: خليفة بن زايد بن سلطان آل نهيان ‎; born 7 September 1948; referred to as Sheikh Khalifa) is the current de jure president of the United Arab Emirates, the emir of Abu Dhabi, the supreme commander of the United Arab Emirates Armed Forces and the chairman of the Supreme Petroleum Council. Sheikh Khalifa is also chairman of Abu Dhabi Investment Authority, which manages $875 billion in assets, the largest amount managed by a nation's head of state in the world. Collectively, the Al Nahyan family is believed to hold a fortune of $150 billion.