| Official Name: | Tha Bo |
| Native Name: | ท่าบ่อ |
| Native Name Lang: | th |
| Settlement Type: | District |
| Subdivision Type: | Country |
| Subdivision Name: | Thailand |
| Subdivision Type1: | Province |
| Subdivision Name1: | Nong Khai |
| Subdivision Type2: | Seat |
| Subdivision Type3: | Subdistrict |
| Subdivision Type4: | Muban |
| Established Title: | District established |
| Population Total: | 84708 |
| Population As Of: | 2005 |
| Blank Name Sec1: | Postal code |
| Blank Info Sec1: | 43110 |
| Blank Name Sec2: | Geocode |
| Blank Info Sec2: | 4302 |
| Timezone: | ICT |
| Utc Offset: | +7 |
| Coordinates: | 17.8497°N 102.5811°W |
Tha Bo (Thai: ท่าบ่อ, in Thai pronounced as /tʰâː bɔ̀ː/; ท่าบ่อ, in Lao pronounced as /tʰāː bɔ́ː/) is a district (amphoe) in the western part of Nong Khai province, northeastern Thailand.
Neighboring districts are (from the east clockwise): Mueang Nong Khai and Sa Khrai of Nong Khai Province; Ban Phue of Udon Thani province; Pho Tak and Si Chiang Mai of Nong Khai Province. To the northeast across the Mekong river is the Lao province Vientiane Prefecture.
The district dates back to the Mueang Tha Bo established in 1897, with Phra Kupradit Padi (พระกุประดิษฐ์บดี) as the first governor (Chao Mueang).
The air quality in Tha Bo in 2018 was the third worst in Thailand after Samut Sakhon and Khorat.[1]
The district is divided into 10 sub-districts (tambons), which are further subdivided into 98 villages (mubans). There are two townships (thesaban tambons): Tha Bo covers parts of tambons Tha Bo and Nam Mong, and Phon Sa covers parts of tambon Phon Sa. There are a further 10 tambon administrative organizations (TAO).
| No. | Name | Thai name | Villages | Pop. | ||
|---|---|---|---|---|---|---|
| 1. | Tha Bo | ท่าบ่อ | 13 | 20,872 | ||
| 2. | Nam Mong | น้ำโมง | 13 | 9,483 | ||
| 3. | Kong Nang | กองนาง | 13 | 9,385 | ||
| 4. | Khok Khon | โคกคอน | 7 | 6,007 | ||
| 5. | Ban Duea | บ้านเดื่อ | 9 | 7,608 | ||
| 6. | Ban Thon | บ้านถ่อน | 8 | 6,461 | ||
| 7. | Ban Wan | บ้านว่าน | 8 | 7,330 | ||
| 8. | Na Kha | นาข่า | 8 | 4,482 | ||
| 9. | Phon Sa | โพนสา | 10 | 7,193 | ||
| 10. | Nong Nang | หนองนาง | 9 | 5,887 |