| Opaka | |
| Native Name: | Опака |
| Native Name Lang: | bg |
| Settlement Type: | City |
| Pushpin Map: | Bulgaria |
| Pushpin Map Caption: | Location of Opaka |
| Coordinates: | 43.4461°N 26.172°W |
| Subdivision Type: | Country |
| Subdivision Name: | Bulgaria |
| Subdivision Type1: | Province (Oblast) |
| Subdivision Name1: | Targovishte |
| Subdivision Type2: | Municipality |
| Subdivision Name2: | Opaka |
| Leader Title: | Mayor |
| Elevation M: | 185 |
| Population Total: | 2833 |
| Population As Of: | 2011 |
| Timezone: | EET |
| Utc Offset: | +2 |
| Timezone Dst: | EEST |
| Utc Offset Dst: | +3 |
| Postal Code Type: | Postal Code |
| Postal Code: | 7840 |
| Area Code: | 06039 |
| Blank Name Sec1: | License Plate |
| Blank Info Sec1: | T |
Opaka (Bulgarian: Опака in Bulgarian pronounced as /opɐˈka/) is a town in Targovishte Province in northeast Bulgaria. As of December 2009, the town had a population of 2,873.[1] It covers an area of .It is south of the city of Rousse on the border with Romania and northeast of the Bulgarian capital, Sofia.Archeologists have found evidence of Thracian, Roman and Slavonic settlements in the area. Near the village of Krepcha, a stone monastery is the site of the oldest known Old Bulgarian Cyrillic inscription, dated from around 920 CE. A 2nd century Thracian tumulus containing various artifacts, including six leaves of a golden wreath and bronze figurines, was excavated in 2011.[2]
It is the seat of Opaka Municipality.
Opaka Rocks off Robert Island, South Shetland Islands are named after Opaka.