| Official Name: | Saba Yoi |
| Native Name: | สะบ้าย้อย |
| Native Name Lang: | th |
| Settlement Type: | District |
| Subdivision Type: | Country |
| Subdivision Name: | Thailand |
| Subdivision Type1: | Province |
| Subdivision Name1: | Songkhla |
| Subdivision Type2: | Seat |
| Subdivision Type3: | Subdistrict |
| Subdivision Type4: | Muban |
| Established Title: | District established |
| Population Total: | 63496 |
| Population As Of: | 2005 |
| Blank Name Sec1: | Postal code |
| Blank Info Sec1: | 90210 |
| Blank Name Sec2: | Geocode |
| Blank Info Sec2: | 9006 |
| Timezone: | ICT |
| Utc Offset: | +7 |
| Coordinates: | 6.6183°N 100.9517°W |
Saba Yoi (Thai: สะบ้าย้อย, in Thai pronounced as /sā.bâː jɔ́ːj/; Pattani Malay: บายอ, in Thai pronounced as /bāːjɔː/) is the southeasternmost district (amphoe) of Songkhla province, southern Thailand.
The name Saba Yoi is a Thai corruption of sebayu (Jawi: سبايو). Its original name means 'wind' in Malay.
The area of Saba Yoi was administered by the Thepha district. It was upgraded to be Ba Hoi minor district (king amphoe) in 1924. In 1942 the government moved the district office to Tambon Mong and renamed the minor district Saba Yoi. It was upgraded to a full district in 1956.[1]
Neighboring districts are (from the west clockwise): Na Thawi and Thepha of Songkhla Province; Khok Pho of Pattani province; Mueang Yala, Yaha, and Kabang of Yala province. To the southwest is the state Kedah of Malaysia.
San Kala Khiri National Park is in Saba Yoi.
The district is divided into nine sub-districts (tambons), which are further subdivided into 62 villages (mubans). Saba Yoi is also a sub-district municipality (thesaban tambon) which covers parts of tambon Saba Yai.
| No. | Name | Thai name | Villages | Pop. | |
|---|---|---|---|---|---|
| 1. | Saba Yoi | สะบ้าย้อย | 9 | 11,636 | |
| 2. | Thung Pho | ทุ่งพอ | 8 | 8,649 | |
| 3. | Pian | เปียน | 7 | 7,677 | |
| 4. | Ban Not | บ้านโหนด | 7 | 6,086 | |
| 5. | Chanae | จะแหน | 5 | 6,527 | |
| 6. | Khuha | คูหา | 8 | 7,667 | |
| 7. | Khao Daeng | เขาแดง | 7 | 6,779 | |
| 8. | Bayo | บาโหย | 5 | 3,961 | |
| 9. | Than Khiri | ธารคีรี | 6 | 4,514 |