Miss Universe Thailand 2017 was the 18th edition of the Miss Universe Thailand pageant held at Royal Paragon Hall, Siam Paragon in Bangkok on 29 July 2017. The previous winner, Chalita Suansane from Samut Prakan crowned Maria Ehren at the end of the event.
The coronation pageant was broadcast live on Channel 3 Thailand. Ehren later represented Thailand at Miss Universe 2017 in Las Vegas, United States and finished in the top five. One of the second runners-up, Paweensuda Drouin represented Thailand at Miss Earth 2017 and reached the top eight. Drouin was the last Thai representative at Miss Earth chosen by Miss Universe Thailand, and became the first second runner-up of the pageant to compete in Miss Earth instead of first runner-up as in previous years.
<small>ç â Ratapiraya directly entered into Top 16 after winning Miss People's Choice.</small>
40 delegates were confirmed, per information from the Miss Universe Thailand official website: