U Hla Tun was born in 1952 to U Saw Maung and Daw Hla Yee in Mandalay. He started painting in 1968 and studied under artists U Myat Thar (his uncle), U Thang Tin (his elder brother), U Khin Maung Than, Ko Tine Kyaw, and other artists in Mandalay. His primary medium is oil paintings.
U Hla Tun has participated in over 50 group shows and hosted a solo show in 2017. He is also the chairperson of the Divisional Artists and Artisons Organization in Mandalay.