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</div> Miss Grand Phetchabun () is a Thai provincial beauty pageant which selects a representative from Phetchabun province to the Miss Grand Thailand national competition. It was founded in 2016 by a lance corporal, Krit Pondetwisai (), as an inter-provincial pageant with other four provincial stages in the lower northern region.
Phetchabun representatives have yet to win the Miss Grand Thailand title. The highest and only placement they obtained was in the top 20 finalists, achieved by Worawalan Phutklang in 2023.
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 Phetchabun province was granted to a local policeman, Krit Pondetwisai, who was also the licensee for other 4 lower northern stages, including Phitsanulok, Uttaradit, , and Kamphaeng Phet. Pondetwisai co-organized the first Miss Grand Phetchabun with the mentioned 4 provincial stages in Mueang Phitsanulok on April 17, 2016, and named a 18-year-old Paphitchaya Kritsawong the Phetchabun's winner. The license was then transferred to a Talent agent, Pitsada Songklod (), who served as the pageant director from 2017 to 2019.
The pageant was usually co-organized with other Miss Grand Thailand provincial stages; it was a stand-alone contest only in the 2017, 2018, 2023, and 2024 editions.
The pageant was skipped in 2022; due to the COVID-19 pandemic in Thailand, the national organizer was unable to organize the national event in 2021, the 2021 Miss Grand Phetchabun winner was sent to compete in the 2022 national stage instead.
The following table details Miss Grand Phetchabun's annual editions since 2016.
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The following is a list of Phetchabun representatives who competed at the Miss Grand Thailand pageant. <div style="white-space:nowrap">
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