ONE Fight Night 27: Tang vs. Abdullaev was a combat sports event produced by ONE Championship that took place on January 11, 2025, at Lumpinee Boxing Stadium in Bangkok, Thailand.

[1][2][3] A ONE Featherweight World Championship bout between current champion Tang Kai and Akbar Abdullaev headlined the event.

[5] An interim ONE Women's Atomweight World Championship bout between Denice Zamboanga and Alyona Rassohyna served as the co-main event.

[6] The pair was previously to meet at ONE Fight Night 25, but Zamboanga withdrawn from the bout due to a hamstring injury.

[9] At the weigh-ins, Kulabdam Sor.Jor.Piek-U-Thai, John Lineker, Praham Gheirati, Cody Jerome and Aaron Cañarte failed the multiple hydration tests.