| Official Name: | Oreshnik |
| Settlement Type: | Village |
| Pushpin Map: | Bulgaria |
| Pushpin Label Position: | Location in Bulgaria |
| Subdivision Type: | Country |
| Subdivision Name: |  Bulgaria |
| Subdivision Type1: | Province |
| Subdivision Name1: | Haskovo Province |
| Subdivision Type2: | Municipality |
| Subdivision Name2: | Topolovgrad |
| Population As Of: | 2007 |
| Timezone: | EET |
| Utc Offset: | +2 |
| Timezone Dst: | EEST |
| Utc Offset Dst: | +3 |
| Coordinates: | 42.0667°N 48°W |
Oreshnik (bg|Орешник, el|Καραϊς Karais or Καρυές Karyes)[1] is a village in the municipality of Topolovgrad, in Haskovo Province, in southern Bulgaria.[2]