| Official Name: | Jalsai |
| Settlement Type: | Union Council |
| Blank Emblem Size: | 100px |
| Blank Emblem Type: | Logo |
| Mapsize: | 280px |
| Map Caption1: | Location within Pakistan |
| Subdivision Type: | Country |
| Subdivision Name: |  Pakistan |
| Subdivision Type1: | Province |
| Subdivision Name1: | Khyber Pakhtunkhwa |
| Subdivision Type2: | District |
| Subdivision Name2: | Swabi |
| Population As Of: | 1998 |
| Blank Name Sec1: | Number of towns |
| Blank Name Sec2: | Number of Union Councils |
| Timezone1: | PST |
| Utc Offset1: | +5 |
Jalsai is an administrative unit, known as Union council of Swabi District in the Khyber Pakhtunkhwa province of Pakistan.Its boundary touches other union councils as Lahor, Manki and Jalbai. Jalsai is connected to GT road through swabi jehangira road
District Swabi has 4 Tehsils i.e. Swabi Tehsil, Lahor, Topi Tehsil and Razar. Each Tehsil comprises certain numbers of union councils. There are 56 union councils in district Swabi.