| Official Name: | Waeng Yai |
| Native Name: | แวงใหญ่ |
| Native Name Lang: | th |
| Settlement Type: | District |
| Subdivision Type: | Country |
| Subdivision Name: | Thailand |
| Subdivision Type1: | Province |
| Subdivision Name1: | Khon Kaen |
| Subdivision Type2: | Seat |
| Subdivision Name2: | Waeng Yai |
| Subdivision Type3: | Subdistrict |
| Subdivision Type4: | Muban |
| Established Title: | District established |
| Population Total: | 29424 |
| Population As Of: | 2005 |
| Blank Name Sec1: | Postal code |
| Blank Info Sec1: | 40330 |
| Blank Name Sec2: | Geocode |
| Blank Info Sec2: | 4013 |
| Timezone: | ICT |
| Utc Offset: | +7 |
| Coordinates: | 15.9594°N 102.5478°W |
Waeng Yai (Thai: แวงใหญ่, in Thai pronounced as /wɛ̄ːŋ jàj/, แวงใหญ่ in Lao pronounced as /wɛ᷇ːŋ ɲāj/) is a district (amphoe) of Khon Kaen province, northeastern Thailand.
Neighboring districts are (from the north clockwise): Khok Pho Chai, Chonnabot, Phon, and Waeng Noi of Khon Kaen Province; Khon Sawan of Chaiyaphum province.
The minor district (king amphoe) Waeng Yai was established on 3 January 1977, when the three tambons Khon Chim, Non Thong, and Mai Na Phiang were split off from Phon district.[1] It was upgraded to a full district on 26 May 1980.[2]
The district is divided into five subdistricts (tambons), which are further subdivided into 50 villages (mubans). Waeng Yai is a township (thesaban tambon) which covers tambon Wang Yai. There are a further four tambon administrative organizations (TAO).
| No. | Name | Thai name | Villages | Pop. | ||
|---|---|---|---|---|---|---|
| 1. | Khon Chim | คอนฉิม | 9 | 4,673 | ||
| 2. | Mai Na Phiang | ใหม่นาเพียง | 14 | 7,912 | ||
| 3. | Non Thong | โนนทอง | 11 | 5,588 | ||
| 4. | Waeng Yai | แวงใหญ่ | 7 | 5,259 | ||
| 5. | Non Sa-at | โนนสะอาด | 9 | 5,992 |