Osama bin Laden, with some spelling variations, is the name used in English to refer to ( ); born 10 March 1957). Variations commonly seen in the English version of the name include "Usama" for "Osama", and/or "bin Ladin" for "bin Laden". Osama bin Laden is a member of the prominent Saudi bin Laden family and the founder of the jihadist organization Al-Qaeda. He has been designated as a terrorist by scholars, journalists, analysts and law enforcement agencies. In conjunction with several other Islamic militant leaders, bin Laden issued two fatwas in 1996 and then again in 1998 that Muslims should force the United States and its allies to withdraw their military forces from the Arabian peninsula, by attacking American military and civilian targets.

He has been indicted in United States federal court for his alleged involvement in the 1998 U.S. embassy bombings in Dar es Salaam, Tanzania and Nairobi, Kenya, and is on the US Federal Bureau of Investigation's Ten Most Wanted Fugitives list.

Although bin Laden has not been indicted for the September 11, 2001 attacks on the United States, he has been reported to have orally claimed responsibility for them in audio and video tapes released to the general public. The attacks involved the hijacking of United Airlines Flight 93, United Airlines Flight 175, American Airlines Flight 11, and American Airlines Flight 77; the subsequent destruction of those planes and the World Trade Center in New York City, New York; severe damage to The Pentagon in Arlington, Virginia; and the deaths of 2,974 people excluding the hijackers.
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Usage variations of bin Laden's name

Because there is no universally accepted standard in the West for transliterating Arabic words and names into English, bin Laden's name is transliterated in many ways. The version often used by most English-language mass media is Osama bin Laden. Most American government agencies, including the FBI and CIA, use either "Usama bin Laden" or "Usama bin Ladin", both of which are often abbreviated to UBL. Less common renderings include "Ussamah Bin Ladin" and "Oussama Ben Laden" (French-language mass media). The latter part of the name can also be found as "Binladen or Binladin".

Strictly speaking, Arabic linguistic conventions dictate that he be referred to as "Osama" or "Osama bin Laden", not "bin Laden," as "Bin Laden" is not used as a surname in the Western manner, but simply as part of his name, which in its entirety means "Osama, son of Mohammed, son of 'Awad, son of Laden". However, the bin Laden family (or "Binladin", as they prefer to be known) do generally use the name as a surname in the Western style. Consequently "bin Laden" has become nearly universal in Western references to him, Arabic convention notwithstanding.