Sena (, ) is a district (amphoe) in Phra Nakhon Si Ayutthaya province, central Thailand. Local people typically know the populated centre of Sena as Ban Phaen ().
Geography Neighboring districts are (from the north clockwise) Phak Hai, Bang Ban, Bang Sai (), Lat Bua Luang and Bang Sai () of Ayutthaya Province.
Administration The district is divided into 17 sub-districts (tambon), which are further subdivided into 132 administrative villages (muban). Sena is a town covering the whole Sena sub-district. There are four sub-district municipalities (thesaban tambon) − Sam Ko and Bang Nom Kho cover the whole same-named sub-district, Hua Wiang the whole sub-district Hua Wiang and Ban Krathum, and Chao Chet the whole sub-district Chao Sadet and parts of the sub-district Chao Chet and Ban Thaeo. There are a further nine tambon administrative organizations as the local government for the sub-districts not part of a municipality. No. Name Thai Pop.1.Senaเสนา4,1032.Ban Phaenบ้านแพน3,3703.Chao Chetเจ้าเจ็ด4,7294.Sam Koสามกอ7,0035.Bang Nom Khoบางนมโค7,1276.Hua Wiangหัวเวียง4,2367.Manwichaiมารวิชัย2,5568.Ban Phoบ้านโพธิ์3,4569.Rang Chorakheรางจรเข้2,75310.Ban Krathumบ้านกระทุ่ม2,12211.Ban Thaeoบ้านแถว4,08412.Chai Naชายนา4,88013.Sam Tumสามตุ่ม4,69214.Lat Ngaลาดงา3,43715.Don Thongดอนทอง2,44416.Ban Luangบ้านหลวง2,84417.Chao Sadetเจ้าเสด็จ2,834
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