Fak Huai (, ) is a tambon (subdistrict) of Aranyaprathet District, in Sa Kaeo province, Thailand. In 2026, it had a population of 4,870 people.
History Fak Huai became a tambon in 2006.
Administration Central administration The tambon is divided into six administrative villages (mubans). No. Name Thai Population1.Fak Huaiฟากห้วย7092.Fak Huaiฟากห้วย4633.Nong Phak Bungหนองผักบุ้ง4144.Kut Taeกุดแต้5005.Fai Taekฝายแตก4196.Bung Khaenบุ่งแคน2527.Na Lau Prachasanนาเหล่าประชาสรรค์4068.Suan Udomสวนอุดม3899.Charoensukเจริญสุข76810.Mai Nong Phak Bungใหม่หนองผักบุ้ง27411.Nong Luangหนองหลวง276
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