Ao Noi (, ) is a tambon (subdistrict) of Mueang Prachuap Khiri Khan District, in Prachuap Khiri Khan province, Thailand. In 2025, it had a population of 19,281 people.

History Ao Noi was considered as a tambon on March 2, 1995

Administration Central administration The tambon is divided into seven administrative villages (mubans). No. Name Thai Population1.Nong Ya Plongหนองหญ้าปล้อง6962.Ao Noiอ่าวน้อย1,1263.Khan Kradaiคั่นกระได1,5884.Ban Buengบ้านบึง1,4995.Nongsuaหนองเสือ9416.Ket-enเกตุเอน1,7467.Komoh Fiveกม. 52,8458.Vangsai Tingวังไทรติ่ง1,1189.Komoh Twelveกม. 121,93510.Vang Maduaวังมะเดื่อ1,43011.Nong Yai-emหนองยายเอม79812.Yansuย่านซื่อ1,06213.Thung Mamaoทุ่งมะเม่า20714.Thung Yaoทุ่งยาว36915.Raiyupไร่ยุบ46016.Bung Yaiบึงใหญ่1,803

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