- Promotion: ONE Championship
- Title: “ONE: Reign of Valor”
- Venue: Thuwunna Indoor Stadium, Yangon, Myanmar
- Date: March 8, 2019
*Updated: February 14, 2019
ONE Super Series card
- Momotaro (Japan) vs Kenny Tse (China): Flyweight kickboxing
- Yuta Watanabe (Japan) vs Rui Botelho (Portugal): Flyweight kickboxing
- Liam Nolan (UK) vs Enriko Kehl (Germany): Featherweight kickboxing
- Petchmorrakot Petchyindee Academy (Thailand) vs Kenta Yamada (Japan): Featherweight kickboxing
MMA card
- Lin Heqin (China) vs Jomary Torres (Philippines): Women’s atomweight
- Roman Alvarez (Guam) vs Chen Rui (China): Bantamweight
- Yoshitaka Naito (Japan) vs Rene Catalan (Philippines): Strawweight
- Bozhena Antoniyar (Myanmar) vs Audreylaura Boniface (Malaysia): Women’s Atomweight
- Tial Thang (Myanmar) vs Rin Saroth (Cambodia): 68kg catchweight
- Toni Tauru (Finland) vs Gary Mangat (Canada): Flyweight
- Phoe Thaw (Myanmar) vs Yohan Mulia Legowo (Indonesia): Featherweight
- Alain Ngalani (Hong Kong and Cameroon) vs Mauro Cerilli (Italy)
Main Event
- Zebaztian Kadestam (Sweden) vs Georgiy Kichigin (Kazakhstan): ONE Welterweight World Championship