The Bagratuni, Bagratid or alternatively Pakradouni (Armenian: Բագրատունի) royal dynasty of Armenia was a royal family whose branches formerly ruled many regional polities, including the Armenian lands of Sper|presently Ispir in Tayk Province of the Armenian Kingdom, Bagrevand in Ayrarat Province of the Armenian Kingdom, Ani in Ayrarat Province of the Armenian Kingdom, Kingdom of Lori|Tashir-Dzoraget, Artsakh Province of the Armenian Kingdom|presently known as Karabakh or Nagorno-Karabakh, Syunik Province of the Armenian Kingdom, Vaspurakan Province of the Armenian Kingdom, Kars|Vanand, Mamikonian lands of Taron| (historic Armenia) Taron, Korduq-Tmoriq Province of Armenian Kingdom|also known as Corduene, and the Armenian Kingdom of Cilicia. Bagrationi branch of kings of Caucasian Iberia|Georgia originated from the Bagratuni Dynasty of Armenia.

The Bagratid family first emerged as nakharars, members of the hereditary nobility of Armenia. Their holdings were in the region of Sper, in the Chorokhi valley. As early as 288-301, the Bagratid prince Smbat held the hereditary Armenian titles of Aspet, which means Master of the Horse, and T'agatir, which means Coronant of the King.