| Khairkhandulaan District | |
| Native Name: | Хайрхандулаан сум |
| Native Name Lang: | mn |
| Settlement Type: | District |
| Subdivision Type: | Country |
| Subdivision Name: | Mongolia |
| Subdivision Type1: | Province |
| Subdivision Name1: | Övörkhangai Province |
| Timezone: | UTC + 8 |
| Utc Offset: | +8 |
Khairkhandulaan (Mongolian: Хайрхандулаан, Mountain warm) is a sum (district) of Övörkhangai Province in southern Mongolia. In 2008, its population was 3,510.[1]