Top Hu (Thai: ตบหู) is a tambon (subdistrict) located in the southern region of Det Udom District, in Ubon Ratchathani Province, Thailand.

[1] The tambon was named after the village in the area; however, such a village was later spilt off to create a new subdistrict, Phon Sawan, which is currently a tambon in Na Chaluai district and was further divided to establish a new administrative division, Non Sawan, where the Top Hu village is currently located.

[1] In 1972, together with six villages split from Na Chaluai, three of the villages in Top Hu were broke off to form a new subdistrict, Phon Sawan, which currently is a tambon in Na Chaluai district.

[1] The Top Hu subdistrict is divided into 17 administrative villages (mubans; หมู่บ้าน), five of which, Kham Samran, Non Khaen, Pho Sai, Phon Duan, and Song Khon villages, each was further divided into two community groups (Mu; หมู่).

The following is a list of the subdistrict's mubans, which roughly correspond to the villages.