At Samat (, ) is a tambon (subdistrict) of Mueang Nakhon Phanom District, in Nakhon Phanom province, Thailand. In 2026, it had a population of 4,982 people.

History The old locals who lived in the subdistrict were a Thai Saek people who evacuated from Xishuangbanna to Vinh and then changed to the place near the Mekong River. The tribes divided into two groups, one of which went to Laos and the other, to Baan Khok Yao which later changed its name to Phai Lorm.

Administration Central administration The tambon is divided into eleven administrative villages (mubans). No. Name Thai Population1.Homห้อม4442.Samran Nueaสำราญเหนือ5173.Samran Taiสำราญใต้3794.Phai Lormไผ่ล้อม3925.At Samatอาจสามารถ3546.At Samatอาจสามารถ3947.Na Huaborนาหัวบ่อ6068.Khamkermคำเกิ้ม4499.Nasomdeeนาสมดี49310.Phai Lorm Nueaไผ่ล้อมเหนือ34311.Homห้อม600

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