Athinkhaya (, ; also spelled Athinhkaya; 1261 – 1310) was a co-founder of Myinsaing Kingdom in present-day Central Burma (Myanmar). As a senior commander in the Royal Army of the Pagan Empire, he, along with his two younger brothers Yazathingyan and Thihathu, led Pagan's successful defense of central Burma against the Mongol invasions in 1287. Following the collapse of the Pagan Empire, the brothers became rivals of King Kyawswa of Pagan in central Burma, and overthrew him in December 1297, nine months after Kyawswa became a Mongol vassal. They successfully defended the second Mongol invasion (1300–01), and emerged the sole rulers of central Burma.