Sagyo Thu-Myat

Shin Zawtayanta (Burmese: ရှင် ဇောတယန္တ, [ʃɪ̀ɰ̃ zɔ́da̰jàɰ̃da̰]; c. 1373–c. 1448/49) was a Burmese Buddhist monk and writer, active in the early 15th century Ava period. He is better known by his religious title Sagyo Thu-Myat (စကြို သူမြတ်, [zədʑò ðùmjaʔ]; lit. 'The Venerable Abbot of the Sagyo [Monastery]').

The monk is best known in Burmese history for successfully persuading King Razadarit of Hanthawaddy to withdraw from Ava during the Ava–Hanthawaddy War (1401–1403), and for pushing through the recalibration of the Burmese calendar in 1438. He was also a pioneer of the religious literary genre of myitta-za, which were letters of friendly exhortations or admonishments for the laity, particularly the royalty.