Ba Yao (, ) is a tambon (subdistrict) of Wang Sam Mo District, in Udon Thani province, Thailand. In 2026, it had a population of 7,752 people.
History Ba Yao became a thesaban on August 16, 2012.
Administration Central administration The tambon is divided into twelve administrative villages (mubans). No. Name Thai Population1.Ba Yaoบะยาว4922.Na Khaeนาแก7093.Na Nok Chumนานกชุม9304.Na Thatนาตาด6535.Khok Sawangโคกสว่าง7156.Khok Laowโคกเล้า8837.Na Phrongนาโปร่ง9778.Dong Ngam Noiดงง่ามน้อย2419.Noi Pattanaน้อยพัฒนา47710.Phu Dinภูดิน63611.Na Chumphonนาชุมพร58812.Ba Yaoบะยาว451
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