| Official Name: | Huai Yap |
| Native Name: | ห้วยยาบ |
| Settlement Type: | Subdistrict |
| Subdivision Type: | Country |
| Subdivision Name: | Thailand |
| Subdivision Type2: | Province |
| Subdivision Name2: | Lamphun |
| Subdivision Type3: | District |
| Subdivision Name3: | Ban Thi District |
| Population As Of: | 2005 |
| Population Total: | 8111 |
| Timezone: | ICT |
| Utc Offset: | +7 |
Huai Yap (Thai: ห้วยยาบ, in Thai pronounced as /hûa̯j jâːp/) is a village and tambon (subdistrict) of Ban Thi District, in Lamphun Province, Thailand.[1] In 2005, it had a population of 8,111 people. The tambon contains 15 villages.