Tabinshwehti was king of Burma (Myanmar) from 1530 to 1550, and the founder of the First Toungoo Empire. His military campaigns (1534–1549) created the largest kingdom in Burma since the fall of the Pagan Empire in 1287. His administratively fragile kingdom proved to be the impetus for the eventual reunification of the entire country by his successor and brother-in-law Bayinnaung.

Myanmar, officially the Republic of the Union of Myanmar and also known as Burma, is a country in Southeast Asia. It is the largest country by area in Mainland Southeast Asia and has a population of about 55 million. It is bordered by Bangladesh and India to its northwest, China to its northeast, Laos and Thailand to its east and southeast, and the Andaman Sea and the Bay of Bengal to its south and southwest. The country's capital city is Naypyidaw, and its largest city is Yangon.