Miss Universe Thailand 2021 was the 22nd edition of the Miss Universe Thailand pageant. It was held on October 24, 2021 at the NICE of Nong Nooch Tropical Garden in Pattaya, Thailand. Miss Universe Thailand 2020, Amanda Obdam, crowned Anchilee Scott-Kemmis as her successor at the end of the event. She represented Thailand at the Miss Universe 2021 competition held in Eilat, Israel but was unplaced.