Illuminati (plural of Latin illuminatus, "enlightened") is a name that refers to several groups, both historical and modern, and both real and fictitious. Historically, it refers specifically to the Bavarian Illuminati, an Enlightenment-era secret society founded on May 1, 1776. In modern times it is also used to refer to a purported conspiratorial organization which acts as a shadowy "power behind the throne", allegedly controlling world affairs through present day governments and corporations, usually as a modern incarnation or continuation of the Bavarian Illuminati. In this context, Illuminati is often used in reference to a New World Order (NWO). Many conspiracy theorists believe the Illuminati are the masterminds behind events that will lead to the establishment of such a New World Order.
The movement was founded on May 1, 1776, in Ingolstadt (Upper Bavaria), by Jesuit-taught Adam Weishaupt (d. 1830),who was the first lay professor of canon law at the University of Ingolstadt. The movement was made up of freethinkers, as an offshoot of the Enlightenment. Writers at the time, such as Seth Payson, believed the movement represented a conspiracy to infiltrate and overthrow the governments of European states. Some writers, such as Augustin Barruel and John Robison, even claimed that the Illuminati were behind the French Revolution, a claim that Jean-Joseph Mounier dismissed in his 1801 book On the Influence Attributed to Philosophers, Free-Masons, and to the Illuminati on the Revolution of France.

The group's adherents were given the name "Illuminati", although they called themselves "Perfectibilists". The group has also been called the Illuminati Order and the Bavarian Illuminati, and the movement itself has been referred to as Illuminism (after illuminism). In 1777, Karl Theodor became ruler of Bavaria. He was a proponent of Enlightened Despotism and, in 1784, his government banned all secret societies, including the Illuminati.
The leader of that movement was Adam Weishaupt. After the "destruction of that movement Adam weishaupt is believed to go in America, there some people say that he became the first President of america George Washington!