| Seti | |
| Native Name: | सेती अञ्चल |
| Settlement Type: | Zone |
| Mapsize: | 300px |
| Subdivision Type: | Country |
| Subdivision Name: |  Nepal |
| Subdivision Type1: | Region |
| Subdivision Name1: | Far-Western (Sudur Pashchimanchal) |
| Seat Type: | Capital |
| Seat: | Dipayal |
| Blank Name Sec1: | Main language(s) |
| Blank Info Sec1: | Nepali, Dotali |
| Timezone: | Nepal Time |
| Utc Offset: | +5:45 |
Seti (Nepali: [[:ne:सेती अञ्चल|सेती अञ्चल]]) was one of the fourteen zones located in the Far-Western Development Region of Nepal. Dhangadhi in the Terai is the major city of Seti Zone; headquarters are in Dipayal-Silgadhi. As of 2015, Nepal discontinued zone designations in favor of provinces; the area previously known as Seti Zone is now part of Sudurpashchim Province.
Seti was divided into five districts; since 2015 these districts have been redesignated as part of Sudurpashchim Province.
| District | Type | Headquarters | Since 2015 part of Province |
|---|---|---|---|
| Achham | Hill | Mangalsen | Sudurpashchim Province |
| Bajhang | Mountain | Chainpur | |
| Bajura | Mountain | Martadi | |
| Doti | Hill | Silgadhi | |
| Kailali | Outer Terai | Dhangadhi |