Ion-Marcel Ciolacu is a Romanian politician who currently serves as the prime minister of Romania. He is the leader of the Social Democratic Party (PSD) since 2019. As a previously little-known politician outside of Buzău County, where he owns a pastry shop and a consulting firm, Ciolacu came into national prominence when he became the deputy prime minister in 2018 in the cabinet of Prime Minister Mihai Tudose.