The 12th edition (13th year) of Miss Grand Thailand featured a pre-pageant camp in Songkhla from 9–18 March 2025, followed by the national costume competition on 24 March, the preliminary round on 26 March, and the final on 29 March at MGI Hall, Bravo BKK Shopping Center, Bangkok. Seventy-seven provincial titleholders competed. During the finale, Malin Chara-anan (Miss Grand Thailand 2024) crowned Saranrat Pueakpipat of Phuket as Miss Grand Thailand 2025. The winner will represent Thailand at Miss Grand International 2025, scheduled to be held in Thailand on 18 October 2025.