Yaza Dewi Mwei Ohn-Naung (Burmese: ရာဇာဒေဝီ မွေ့ အုန်နောင်, pronounced [jàzà dèwì mwḛ ʔòɴ nàʊɴ]) was the chief queen consort of King Razadarit of Hanthawaddy Pegu from 1392 to 1421.

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According to the Razadarit Ayedawbon chronicle, the queen was the eldest daughter of Saw Ye-Bein, a senior minister at the Hanthawaddy court. Her personal name was Mwei Ohn-Naung (မွေ့ အုန်နောင်). She had two younger sisters, Mwei Auk and Mi U-Si^[1] In April 1392, she was raised as the chief queen of King Razadarit, with the title of Yaza Dewi (Pali: Rājadevī). Her two sisters were also raised as queens at the same ceremony.^[1]

She and her sisters were first cousins once removed of the king. Their father was a first cousin of Razadarit. Their paternal grandfather Binnya Thein was a noble from Chiang Mai who after a disagreement with the king of Chiang Mai had sought refuge at the court of King Binnya U. Their paternal grandmother was Tala Saw Lun, a daughter of King Saw Zein.^[2]