Thihathu (Burmese: သီဟသူ, pronounced: [θìha̰θù]; 1265–1325) was a co-founder of Myinsaing Kingdom, and the founder of the Pinya Kingdom in today's central Burma (Myanmar). Thihathu was the youngest and most ambitious of the three brothers that successfully defended central Burma from Mongol invasions in 1287 and in 1300–01. He and his brothers toppled the regime at Pagan in 1297, and co-ruled central Burma.