Alexandru Dimitrie Ghica[1] (1 May 1796[2] – January 1862), a member of the Ghica family, was Prince of Wallachia from April 1834 to 7 October 1842 and later caimacam (regent) from July 1856 to October 1858.

[citation needed] He was son of Demetriu Ghica and Eufrosine Caradja.

[4] Alexandru was appointed jointly by the Ottoman Empire and Russia (1834–1842) as hospodar of Wallachia.

Under him the so-called règlement organique had been promulgated; an attempt was made to codify the laws in conformity with the institutions of the country and to secure better administration of justice.

[5] At the end of his reign as Prince of Wallachia, he was replaced by the Russian-backed Gheorghe Bibescu.