Thiri Yaza Dewi Mwei Ma-Gu-Thauk (Burmese: သီရိရာဇာဒေဝီ မွေ့မဂူသောက်, pronounced [θìɹḭ jàzà dèwì mwḛ mə gù θaʊ̯ʔ]) was a principal queen of King Binnya U of Hanthawaddy.
She was the mother of Prince Baw Ngan-Mohn, the heir-apparent during the late reign of Binnya U.
One day, Binnya U was returning from an elephant hunting trip, and stopped by at Byat-Laing, and saw her.
Her Mon language name Mwei Ma-Gu-Thauk (or Hla Hteik-Khaung in Burmese) means "Epitome of Beauty".
Nwe, now known as King Razadarit imprisoned Ngan-Mohn, and ordered him executed in 1389/90.