Mihail Kogălniceanu was a Romanian liberal statesman, lawyer, historian and publicist; he became Prime Minister of Romania on October 11, 1863, after the 1859 union of the Danubian Principalities under Domnitor Alexandru Ioan Cuza, and later served as Foreign Minister under Carol I. He was several times Interior Minister under Cuza and Carol. A polymath, Kogălniceanu was one of the most influential Romanian intellectuals of his generation. Siding with the moderate liberal current for most of his lifetime, he began his political career as a collaborator of Prince Mihail Sturdza, while serving as head of the Iași Theater and issuing several publications together with the poet Vasile Alecsandri and the activist Ion Ghica. After editing the highly influential magazine Dacia Literară and serving as a professor at Academia Mihăileană, Kogălniceanu came into conflict with the authorities over his Romantic nationalist inaugural speech of 1843. He was the ideologue of the abortive 1848 Moldavian revolution, authoring its main document, Dorințele partidei naționale din Moldova.

The prime minister of Romania, officially the prime minister of the Government of Romania, is the head of the Government of Romania. Initially, the office was styled President of the Council of Ministers, when the term "Government" included more than the Cabinet, and the Cabinet was called the Council of Ministers. The title was officially changed to Prime Minister by the 1965 Constitution of Romania during the communist regime.