João Bernardo "Nino" Vieira (27 April 1939 – 2 March 2009) was the President of Guinea-Bissau from 1980 to 1999 and again from 2005 to 2009. After seizing power in 1980, Vieira ruled for 19 years, and he won a multiparty presidential election in 1994. He was ousted at the end of the 1998–1999 civil war and went into exile. He made a political comeback in 2005, winning that year's presidential election. Vieira was killed by soldiers on 2 March 2009, apparently in retaliation for a bomb blast that killed Guinea-Bissau's military chief General Batista Tagme Na Waie. The military officially denied these allegations after Army officials claimed responsibility for Vieira's death.
Vieira described himself as "God's gift" to Guinea-Bissau during his tenure in office.
He was the only president of Guinea-Bissau to be assassinated.