Miss Universe Thailand 2023 was the 24th Miss Universe Thailand pageant, held at MCC Hall, The Mall Lifestore Ngamwongwan in Nonthaburi, Thailand, on 20 August 2023. Anna Sueangam-iam crowned Anntonia Porsild of Nakhon Ratchasima as her successor. Porsild represented Thailand at Miss Universe 2023 in El Salvador and finished as first runner-up. The edition’s theme was “The Unlimited.”