Sithu Kyawhtin (Burmese: စည်သူကျော်ထင်, pronounced: [sìθù tɕɔ̀tʰɪ̀ɴ]; also known as Narapati Sithu (နရပတိ စည်သူ, [nəɹa̰pətḭ sìθù])) was the last king of Ava from 1551 to 1555. He came to power by overthrowing King Narapati III in 1551, the culmination of his six-year rebellion (1545–1551) with the support of the Shan state of Mohnyin.As king, he was able to get all members of the Confederation of Shan States to unite against an impending invasion by King Bayinnaung of Toungoo Dynasty.