| Official Name: | Seydan |
| Native Name: | صيدان |
| Settlement Type: | village |
| Pushpin Map: | Iran |
| Mapsize: | 150px |
| Subdivision Type: | Country |
| Subdivision Type1: | Province |
| Subdivision Name1: | Kurdistan |
| Subdivision Type2: | County |
| Subdivision Name2: | Sanandaj |
| Subdivision Type3: | Bakhsh |
| Subdivision Name3: | Central |
| Subdivision Type4: | Rural District |
| Subdivision Name4: | Hoseynabad-e Jonubi |
| Population As Of: | 2006 |
| Population Total: | 99 |
| Population Density Km2: | auto |
| Timezone: | IRST |
| Utc Offset: | +3:30 |
| Timezone Dst: | IRDT |
| Utc Offset Dst: | +4:30 |
| Coordinates: | 35.6222°N 47.3086°W |
Seydan (Persian: صيدان, also Romanized as Şeydān; also known as Saiyad and Şayyād) is a village in Hoseynabad-e Jonubi Rural District, in the Central District of Sanandaj County, Kurdistan Province, Iran. At the 2006 census, its population was 99, in 23 families. The village is populated by Kurds.[1]