Ion Iliescu, Romanian engineer and politician, 2nd President of Romania
Ion Iliescu (Romanian pronunciation: [iˈon iliˈesku] (listen); born 3 March 1930) is a Romanian politician and engineer who served as President of Romania from 1989 to 1996 and from 2000 until 2004. Between 1996 and 2000 and also from 2004 to 2008, the year in which he retired, Iliescu was a senator for the Social Democratic Party (PSD), of which he is the founder and honorary president.

Iliescu joined the Romanian Communist Party (PCR) in 1953 and became a member of its Central Committee in 1965. Beginning with 1971, he was gradually marginalized by Nicolae Ceaușescu. He had a leading role in the Romanian Revolution, becoming the country's president in December 1989. In May 1990, he became Romania's first freely elected head of state. After a new constitution was approved by popular referendum, he served a further two terms, from 1992 to 1996 and from 2000 to 2004, separated by the presidency of Emil Constantinescu, who defeated him in 1996.

In 2004, during his presidency, Romania joined NATO. In April 2018, Iliescu was charged in Romania with committing crimes against humanity by "approving military measures, some of which had an evidently diversionary character" during the deadly aftermath of the country's 1989 revolution. In 2020, a judge rejected the case due to irregularities in the indictment. Iliescu is currently the oldest living former Romanian president.