| Official Name: | Terziysko |
| Settlement Type: | Village |
| Pushpin Map: | Bulgaria |
| Pushpin Map Caption: | Location in Bulgaria |
| Subdivision Name: |  Bulgaria |
| Subdivision Type1: | Province |
| Subdivision Name1: | Burgas Province |
| Subdivision Type2: | Municipality |
| Subdivision Name2: | Sungurlare Municipality |
| Population As Of: | 2007 |
| Timezone: | EET |
| Utc Offset: | +2 |
| Timezone Dst: | EEST |
| Utc Offset Dst: | +3 |
| Coordinates: | 42.681°N 26.764°W |
Terziysko is a village in Sungurlare Municipality, in Burgas Province, in southeastern Bulgaria.[1]