Smim Sawhtut (Burmese: သမိန်စောထွတ်, pronounced [θəmèiɰ̃ sɔ́ tʰʊʔ]; died August 1550) was a pretender to the Hanthawaddy throne, who assassinated King Tabinshwehti of Toungoo. The ethnic Mon governor of Sittaung was a minister in the court of Tabinshwehti, who had conquered the Mon-speaking Hanthawaddy Pegu in 1539. He became a close confidant of the king. On 30 April 1550, he lured the king to the region near Pantanaw in the Irrawaddy delta to search for a white elephant—considered auspicious by the Burmese, and there assassinated him.