Ismaïl Omar Guelleh, Ethiopian-Djiboutian lawyer and politician, President of Djibouti
Ismaïl Omar Guelleh (Somali: Ismaaciil Cumar Geelle; Arabic: إسماعيل عمر جليه) (born 27 November 1947) is the current President of Djibouti. He has been in office since 1999, making him one of the longest-serving rulers in Africa. He is often referred to by his initials, IOG.

Guelleh was first elected as President in 1999 as the handpicked successor to his uncle, Hassan Gouled Aptidon, who had ruled Djibouti since independence in 1977. Guelleh was re-elected in 2005, 2011, 2016 and in 2021. The elections were largely boycotted by the opposition amid complaints over widespread irregularities. Guelleh has been characterized as a dictator, and his rule has been criticized by human rights groups and governments, such as the United States. He is, at the international level, a close ally of France.

He was awarded the Padma Vibhushan, India's second-highest civilian award, on 25 January 2019 for his role in the safe evacuation of Indian citizens from Yemen.