The House of Basarab was a ruling family of Cuman origin, which had an important role in the establishing of the Principality of Wallachia, giving the country its first line of Princes, one closely related with the Mușatin rulers of Moldavia. Its status as a dynasty is rendered problematic by the official elective system, which implied that male members of the same family, including illegitimate offspring, were chosen to rule by a council of boyars. After the rule of Alexandru I Aldea, the house was split by the conflict between the Dănești and the Drăculești, both of which claimed legitimacy. Several late rulers of the Craiovești claimed direct descent from the House after its eventual demise, including Neagoe Basarab, Matei Basarab, Constantin Șerban, Șerban Cantacuzino, and Constantin Brâncoveanu.

Wallachia or Walachia is a historical and geographical region of modern-day Romania. It is situated north of the Lower Danube and south of the Southern Carpathians. Wallachia was traditionally divided into two sections, Muntenia and Oltenia. Dobruja could sometimes be considered a third section due to its proximity and brief rule over it. Wallachia as a whole is sometimes referred to as Muntenia through identification with the larger of the two traditional sections.