Yazdegerd, Yazdgerd, Yazdigird, or Yazdagird (Inscriptional <yzdkrty> or <yzdklty> Yazdgird, Yazdkirt; Yazdgerd; Yazdijird) may refer to:
Yazdegerd I (r. 399–420), Sasanian King of Persia Yazdegerd II (r. 438–457), Sasanian King, son of Bahram V Yazdegerd III (r. 632–651), last king of the Sasanian Empire Yazdagird (Bavandid ruler) (r. 1271–1300), ruler in Mazandaran Yazdgerd, Lorestan, a village in Lorestan Province, Iran
See also Yazata, also sometimes spelled Yazad