The 2018 Miss Universe Thailand Pageant ended with Sophida Kanchanarin winning the title of Miss Universe Thailand 2018. She will go on to represent Thailand in the 2018 Miss Universe Pageant.

The Top 5 finalists at the 2018 Miss Universe Thailand Pageant were:

First Runner-Up - Thitaree Kasorn
Second Runner-Up - Valentina Giardullo
Second Runner-Up - Praveenar Singh
Second Runner-Up - Palita Puttharassu

The Top 10 finalists at the 2018 Miss Universe Thailand Pageant were:

Nicolene Pichapa Limsnukan
Vanaporn Makaduangkeo
Aniphan Chalermburanawong
Natharuetai Akkarakijwattanakul
Supatra Kiatjarungphan

The Top 16 semi-finalists at the 2018 Miss Universe Thailand Pageant were:

Penpimon Sasithammawong
Pichaya Suwansawek
Ruechanok Meesang
Menisa Chumsaisakul
Watusiri Jaiklang
Lilikarn Phornnipatkul