The Hungarian conquest of the Carpathian Basin, also known as the Hungarian conquest or the Hungarian land-taking, was a series of historical events ending with the settlement of the Hungarians in Central Europe in the late 9th and early 10th century. Before the arrival of the Hungarians, three early medieval powers, the First Bulgarian Empire, East Francia, and Moravia, had fought each other for control of the Carpathian Basin. They occasionally hired Hungarian horsemen as soldiers. Therefore, the Hungarians who dwelt on the Pontic-Caspian Steppe east of the Carpathian Mountains were familiar with what would become their homeland when their conquest started.

Hungarian is a Uralic language spoken in Hungary and parts of several neighbouring countries. It is the official language of Hungary and one of the 24 official languages of the European Union. Outside Hungary, it is also spoken by Hungarian communities in southern Slovakia, western Ukraine (Transcarpathia), central and western Romania (Transylvania), northern Serbia (Vojvodina), northern Croatia, northeastern Slovenia (Prekmurje), and eastern Austria (Burgenland).