| Official Name: | Sazhdenik |
| Native Name: | Сажденик |
| Native Name Lang: | bg |
| Settlement Type: | Village |
| Pushpin Label Position: | Location in Bulgaria |
| Subdivision Name: |  Bulgaria |
| Subdivision Type1: | Province |
| Subdivision Name1: | Kyustendil Province |
| Subdivision Type2: | Municipality |
| Subdivision Name2: | Kyustendil |
| Population Total: | 5 (official data: 15.12.2021) |
| Timezone: | EET |
| Utc Offset: | +2 |
| Timezone Dst: | EEST |
| Utc Offset Dst: | +3 |
| Elevation M: | 1185 |
| Postal Code: | 2576 |
| Area Code: | 078 |
Sazhdenik is a village in Kyustendil Municipality, Kyustendil Province, south-western Bulgaria. Located is at southern slopes at Osogowska mountain (Bulgarian: Осоговска планина).[1]