Stefano Bonaccini (; born 1 January 1967) is an Italian politician and member of the Democratic Party (PD), of which he is serving as president since 12 March 2023. In 2024, he was elected to the European Parliament to represent North-East Italy.

For nearly ten years, from November 2014 to July 2024, Bonaccini served as the President of Emilia-Romagna.