Boniface Alexandre (French pronunciation: [bɔnifas alɛksɑ̃dʁ]; 31 July 1936 – 4 August 2023) was a Haitian politician. Alexandre served as the provisional president of Haiti following the 2004 coup d'état that removed President Jean-Bertrand Aristide from office. He served until May 2006.

Alexandre was raised by his uncle, Martial Célestin, Haiti's first prime minister. Trained as a lawyer, he worked for a law firm in Port-au-Prince for 25 years before being appointed to the Supreme Court in 1992. Aristide appointed him as Chief Justice of the Supreme Court in 2002.^[1]

Alexandre, as the Chief Justice and therefore next in the presidential line of succession, assumed the office of president after the coup. During Alexandre's acting presidency, Amnesty International reported "excessive use of force by police officers", extrajudicial executions, a lack of investigations into these, escalation of "unlawful killings and kidnappings by illegal armed groups", failure of officials to prevent and punish violence against women, dysfunctionality of the justice system, and forty or more people imprisoned without charge or trial.^[2]

Alexandre left office on 14 May 2006, when René Préval, winner of the February 2006 presidential election, was sworn in as president.

Boniface Alexandre died at his home in Port-au-Prince, on 4 August 2023, four days after his 87th birthday.^[3][4]

• 2004 Haitian coup d'état
• Politics of Haïti