| Official Name: | Huai Khrai |
| Native Name: | ห้วยไคร้ |
| Settlement Type: | Tambon |
| Subdivision Type: | Country |
| Subdivision Name: | Thailand |
| Subdivision Type2: | Province |
| Subdivision Name2: | Chiang Rai |
| Subdivision Type3: | District |
| Subdivision Name3: | Mae Sai |
| Population As Of: | 2005 |
| Population Total: | 7,609 |
| Timezone: | ICT |
| Utc Offset: | +7 |
Huai Khrai (Thai: ห้วยไคร้, in Thai pronounced as /hûaj.kʰráj/; Northern Thai language: in Thai pronounced as /hűaj.xáj/) is a village and tambon (subdistrict) of Mae Sai District, in Chiang Rai Province, Thailand.[1] In 2005, it had a population of 7,609 people. The tambon contains 11 villages.