Miss Grand Prachuap Khiri Khan (Thai: มิสแกรนด์ประจวบคีรีขันธ์) is a Thai provincial beauty pageant which selects a representative from Prachuap Khiri Khan province to the Miss Grand Thailand national competition.

[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 Prachuap Khiri Khan province was obtained by an entrepreneur Kanisa Natthapaphan, who served as the pageant director until 2022.

[5][6][8] Under her directorship, the first Miss Grand Prachuap Khiri Khan contest was organized in March 2017 in Hua Hin, and a model Sarucha Nilchan was announced the winner.

[13] The following table details Miss Grand Prachuap Khiri Khan's annual editions since 2017.

The following is a list of Prachuap Khiri Khan representatives who competed at the Miss Grand Thailand pageant.