This is a list of rulers of Taungoo, the predecessor principality of the Taungoo Dynasty of what is now Myanmar. The principality of Taungoo, at the edge of the realm of Upper Burma-based kingdoms, was a rebellion-prone vassal state. The region was ruled by hereditary viceroys as well as appointed governors, depending on the power of the high king at Pinya, and later Inwa (Ava). Many of the rulers of Taungoo were assassinated while in office, and a few others died in action, showing the frontier nature of the region. The high kings at Ava at times had only nominal control or no control in many stretches. After 1612, the office of viceroy at Taungoo became a mere appointed governorship as the Restored Taungoo kings abolished then existing hereditary viceroyships throughout the entire Irrawa