| Official Name: | Mueang Nong Khai |
| Native Name: | เมืองหนองคาย |
| Native Name Lang: | th |
| Settlement Type: | District |
| Subdivision Type: | Country |
| Subdivision Name: | Thailand |
| Subdivision Type1: | Province |
| Subdivision Name1: | Nong Khai |
| Subdivision Type2: | Seat |
| Subdivision Name2: | Nong Kom Ko |
| Population Total: | 145153 |
| Population As Of: | 2008 |
| Blank Name Sec1: | Postal code |
| Blank Info Sec1: | 43000 |
| Blank Name Sec2: | Geocode |
| Blank Info Sec2: | 4301 |
| Timezone: | ICT |
| Utc Offset: | +7 |
| Coordinates: | 17.88°N 102.7417°W |
Mueang Nong Khai (th|เมืองหนองคาย, pronounced as /th/) is the capital district (amphoe mueang) of Nong Khai province, northeastern Thailand.
Neighboring districts are (from the east clockwise): Phon Phisai of Nong Khai Province, Phen of Udon Thani province, Sakhrai and Tha Bo of Nong Khai Province. To the north across the Mekong River is the Lao province Vientiane Prefecture.
The district is served by the Nong Khai railway station.
The district is divided into 16 sub-districts (tambons), which are further subdivided into 181 villages (mubans). The town (thesaban mueang) Nong Khai covers the tambons Nai Mueang, Michais, and parts of the tambons Pho Chai, Khun Wan, Hat Kham, Nong Kom Ko, and Mueang Mi. There are two sub-district municipalities (thesaban tambons): Nong Song Hong covers parts of tambon Khai Bok Wan, and Wiang Khuk covers parts of the same-named tambon. There are a further 14 tambon administrative organizations (TAO).
| No. | Name | Thai | Villages | Pop.[1] | |
|---|---|---|---|---|---|
| 1. | Nai Mueang | ในเมือง | 17 | 19,866 | |
| 2. | Mi Chai | มีชัย | 9 | 6,679 | |
| 3. | Pho Chai | โพธิ์ชัย | 12 | 15,152 | |
| 4. | Kuan Wan | กวนวัน | 7 | 5,458 | |
| 5. | Wiang Khuk | เวียงคุก | 8 | 6,274 | |
| 6. | Wat That | วัดธาตุ | 14 | 9,271 | |
| 7. | Hat Kham | หาดคำ | 16 | 15,692 | |
| 8. | Hin Ngom | หินโงม | 8 | 4,197 | |
| 9. | Ban Duea | บ้านเดื่อ | 16 | 7,183 | |
| 10. | Khai Bok Wan | ค่ายบกหวาน | 16 | 13,924 | |
| 11. | Phon Sawang[2] | โพนสว่าง | 10 | 6,004 | |
| 13. | Phra That Bang Phuan | พระธาตุบังพวน | 14 | 10,647 | |
| 16. | Nong Kom Ko | หนองกอมเกาะ | 12 | 11,005 | |
| 17. | Pa Kho | ปะโค | 7 | 5,927 | |
| 18. | Mueang Mi | เมืองหมี | 7 | 4,384 | |
| 19. | Si Kai | สีกาย | 8 | 3,490 |