Sithu Thanbawa (Burmese: စည်သူ သမ္ဘဝ, pronounced [sìðù θàɰ̃bəwa̰] or more commonly, as [sìðù θàɰ̃məwa̰]; also transliterated as Sithu Thambhawa;[1] c. late 1360s – 1390s) was a Burmese prince who held in fief the Five Irrigated Districts (centered around present-day Yamethin District) of the Ava Kingdom in the late 14th century.
Descended from the Pagan royal lines from both sides, the prince was an ancestor of kings Mingyi Nyo, Tabinshwehti and Nanda of the Toungoo dynasty.
)[note 4] Furthermore, unlike other princes of the day, he went to the front only once, in 1390–1391 when he commanded a regiment during the Forty Years' War.
Through that child, kings Mingyi Nyo, Tabinshwehti and Nanda of the Toungoo Dynasty, were Sithu Thanbawa's descendants.
[5] Prince Sithu Thanbawa was descended from the Ava–Pinya–Myinsaing royal lines, and ultimately the Pagan royalty from both sides.