Louis Farrakhan (; born Louis Eugene Walcott, May 11, 1933) is an American black supremacist and anti-white cult leader who heads the Nation of Islam (NOI). Prior to joining the NOI, he was a calypso singer who used the stage name Calypso Gene. Earlier in his career, he served as the minister of mosques in Boston and Harlem and was appointed National Representative of the Nation of Islam by then NOI leader Elijah Muhammad. He adopted the name Louis X, before being named Louis Farrakhan.

After Warith Deen Mohammed reorganized the original NOI into the orthodox Sunni Islamic group American Society of Muslims, Farrakhan began to rebuild the NOI as "Final Call". In 1981, he officially adopted the name "Nation of Islam", reviving the group and establishing its headquarters at Mosque Maryam. The Nation of Islam is an organization which the Southern Poverty Law Center (SPLC) describes as a hate group. Farrakhan’s antisemitic statements and views have been condemned by the SPLC, the Anti-Defamation League (ADL), and other monitoring organizations. According to the SPLC, the NOI promotes a "fundamentally anti-white theology" amounting to an "innate black superiority over whites". Farrakhan's views and remarks have also been called homophobic. He has disputed these assertions.

In October 1995, he organized and led the Million Man March in Washington, D.C.. Due to health issues, he reduced his responsibilities with the NOI in 2007. However, Farrakhan has continued to deliver sermons and speak at NOI events. In 2015, he led the 20th Anniversary of the Million Man March: Justice or Else.

Farrakhan was banned from Facebook in 2019 along with other public figures considered to be extremists.