| Consort: | yes |
| Thiri Maya Dewi Mi U-Si သီရိမာယာဒေဝီ မည်ဦးစည် | |
| Reign: | April 1392 – 1421 |
| Succession: | Queen of the Central Palace of Hanthawaddy |
| Predecessor: | Thiri Yaza Dewi |
| Successor: | unknown |
| Suc-Type: | Successor |
| Spouse: | Razadarit |
| House: | Hanthawaddy Pegu |
| Father: | Saw Ye-Bein |
| Religion: | Theravada Buddhism |
Thiri Maya Dewi Mi U-Si (Burmese: သီရိမာယာဒေဝီ မည်ဦးစည်, in Burmese pronounced as /θìɹḭ màjà dèwì mì ʔú sì/[1]) was a principal queen of King Razadarit of Hanthawaddy Pegu from 1392 to 1421.
According to the Razadarit Ayedawbon chronicle, the queen was the youngest daughter of Saw Ye-Bein, a senior minister at the Hanthawaddy court. Her personal name was Mi U-Si (မည်ဦးစည်). She had two elder sisters Mwei Ohn-Naung and Mwei Auk[2] In April 1392, she became a senior queen of King Razadarit, with the title of Thiri Maya Dewi (Pali: Sirimāyādevī). Her two sisters were also raised as queens at the same ceremony.[2]
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.[3]