Miss Grand Sing Buri (Thai: มิสแกรนด์สิงห์บุรี) is a Thai provincial beauty pageant which selects a representative from Sing Buri province to the Miss Grand Thailand national competition.

[5][6] Sing Buri representatives have yet to win the Miss Grand Thailand title.

[7] In 2016, after Miss Grand Thailand began franchising the provincial competitions to individual organizers, who would name seventy-seven provincial titleholders to compete in the national pageant, the license for Sing Buri province was granted to a television host Phumiphat Thammaphan (ภูมิพัฒน์ ธรรมพันธ์ or เต๋าทีวีพูล), who assigned a model Athitaya Khunnalaphat to represent the province in the 2016 national contest where she was named the second runner-up.

[7] In 2017, the license was transferred to television personality, Chalermchai Innoi, also known as Lexy Khayee Dara (เล็กซ์ซี่ ขยี้ดารา).

The following is a list of Ang Thong representatives who competed at the Miss Grand Thailand pageant.