| Consort: | yes |
| Thiri Yaza Dewi Mwei Ma-Gu-Thauk သီရိရာဇာဒေဝီ မွေ့မဂူသောက် | |
| Reign: | 1350 – 2 January 1384 |
| Succession: | Queen of Hanthawaddy |
| Suc-Type: | Successor |
| Spouse: | Binnya U (1350?–1384) |
| Issue: | Baw Ngan-Mohn |
| House: | Hanthawaddy Pegu |
| Birth Date: | 1330s |
| Birth Place: | Byat-Laing, Martaban Kingdom |
| Religion: | Theravada Buddhism |
Thiri Yaza Dewi Mwei Ma-Gu-Thauk (Burmese: သီရိရာဇာဒေဝီ မွေ့မဂူသောက်, in Burmese pronounced as /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.
According to the chronicle Razadarit Ayedawbon, she was a commoner village girl from the village of Byat-Laing, north of then capital Martaban (Mottama). One day, Binnya U was returning from an elephant hunting trip, and stopped by at Byat-Laing, and saw her. Taken by her beauty, the king made her his concubine. Her Mon language name Mwei Ma-Gu-Thauk (or Hla Hteik-Khaung in Burmese) means "Epitome of Beauty".[1]
The king was extremely fond of her. She later became a queen with the title of Thiri Yaza Dewi.[2] [3] She bore a son, Baw Ngan-Mohn, about two decades later.[4] The king was fond of Ngan-Mohn, and made him the heir-apparent of the kingdom, by 1382.[5] But she never became the Queen Mother. In 1384, Binnya U died, and Prince Binnya Nwe seized the throne with the help of the court. Nwe, now known as King Razadarit imprisoned Ngan-Mohn, and ordered him executed in 1389/90.[6]
She was also known as the Queen of Pegu because she donated a monastery at the Gu-Nin village near Pegu.[7]