| Official Name: | Mueang Chaiyaphum |
| Native Name: | เมืองชัยภูมิ |
| Native Name Lang: | th |
| Settlement Type: | District |
| Subdivision Type: | Country |
| Subdivision Name: | Thailand |
| Subdivision Type1: | Province |
| Subdivision Name1: | Chaiyaphum |
| Subdivision Type2: | Seat |
| Subdivision Type3: | Subdistrict |
| Subdivision Type4: | Muban |
| Established Title: | District established |
| Population Total: | 183,259 |
| Blank Name Sec1: | Postal code |
| Blank Info Sec1: | 36000 |
| Blank Name Sec2: | Geocode |
| Blank Info Sec2: | 3601 |
| Timezone: | ICT |
| Utc Offset: | +7 |
| Coordinates: | 15.8069°N 102.0317°W |
Mueang Chaiyaphum (Thai: เมืองชัยภูมิ, in Thai pronounced as /mɯ̄aŋ tɕʰāj.jā.pʰūːm/; เมืองชัยภูมิ, in Lao pronounced as /mɯ᷇aŋ sa᷇j.ɲā.pʰu᷇ːm/) is the capital district (amphoe mueang) of Chaiyaphum province, northeastern Thailand. Chaiyaphum Municipality is the seat of provincial government and its largest city.
The history of the city of Chaiyaphum dates back to the Dvaravati era. In the early years of the Ayutthaya Kingdom, Chaiyaphum was still controlled by the Lao Lan Xang Kingdom. After the Ayutthaya Kingdom conquered Vientiane, Laotians traveling through the area settled to form the town.
Around the year 1817, a Mr. Lae led a group of Laotian people from Vientiane across the Mekong River to find fertile ground. They finally settled in the area of Ban Luang. King Anouvong of Lan Xang consulted with King Rama III to promote Lae to be Khun Phakdi Chumphon. Later he was promoted to be the governor of Chaiyaphum as Phraya Phakdi Chumphon. When King Anouvong declared war on Siam in an attempt to regain independence, Phraya Phakdi Chumphon changed allegiance and supported the Siamese troops. He was killed by King Anouvong. When King Chulalongkorn reformed the government administration, Chaiyaphum was included in Monthon Nakhon Ratchasima.
Neighboring districts are (from the north clockwise) Kaset Sombun, Kaeng Khro, and Khon Sawan of Chaiyaphum Province, Kaeng Sanam Nang and Ban Lueam of Nakhon Ratchasima province, and Noen Sa-nga, Ban Khwao and Nong Bua Daeng.
Phu Laen Kha[1] and Tat Ton National Parks are in Mueang Chaiyaphum District.
The district is divided into 19 sub-districts (tambons), which are further subdivided into 216 villages (mubans). Chaiyaphum itself has town (thesaban mueang) status, and administers tambon Nai Mueang. Ban Khai has township (thesaban tambon) status and covers parts of tambon Ban Khai.
| 1. | Nai Mueang | ในเมือง | ||
| 2. | Rop Mueang | รอบเมือง | ||
| 3. | Phon Thong | โพนทอง | ||
| 4. | Na Fai | นาฝาย | ||
| 5. | Ban Khai | บ้านค่าย | ||
| 6. | Kut Tum | กุดตุ้ม | ||
| 7. | Chi Long | ชีลอง | ||
| 8. | Ban Lao | บ้านเล่า | ||
| 9. | Na Siao | นาเสียว | ||
| 10. | Nong Na Saeng | หนองนาแซง | ||
| 11. | Lat Yai | ลาดใหญ่ | ||
| 12. | Nong Phai | หนองไผ่ | ||
| 13. | Tha Hin Ngom | ท่าหินโงม | ||
| 14. | Huai Ton | ห้วยต้อน | ||
| 15. | Huai Bong | ห้วยบง | ||
| 16. | Non Samran | โนนสำราญ | ||
| 17. | Khok Sung | โคกสูง | ||
| 18. | Bung Khla | บุ่งคล้า | ||
| 19. | Sap Si Thong | ซับสีทอง |