Miss Universe Thailand 2025, the 26th edition of the pageant, was held at MGI Hall in Bangkok, Thailand. The national costume and preliminary competitions took place on 18 and 20 August, with the final on 23 August 2025. This was the first edition organized under MGI PCL. Natalie Glebova crowned Praveenar Singh of Saraburi as the winner; she later represented Thailand at Miss Universe 2025 and finished as 1st runner-up.