| Cape Atiya Fortress |
6 |
| Cape Chervenka |
10 |
| Cape Chervenka Fortress |
11 |
| Cape Chirakman |
5 |
| Cape Foros |
8 |
| Cape Kaliakra |
26 |
| Cape of Akin |
1 |
| Cape of Kaliakra |
23 |
| Cape of Maslen Nos (Oil Cape) |
8 |
| Cape of St. Athanasius |
4 |
| Cape of Stolets (Scamium) |
8 |
| Cape Shabla |
3 |
| Cape Tarkhankut |
1 |
| capitals of Bulgaria |
2 |
| Capitoline Hill |
4 |
| Capitoline Triad |
2 |
| Capt. Stanko Stankov |
1 |
| Captain Georgi Mamarchev |
1 |
| Captain Petko Voyvoda (Petko Kiryakov) |
2 |
| Carabinieri |
1 |
| Carabinieri Department for the Protection of Cultural Heritage |
1 |
| Caraglio |
1 |
| Caragna |
1 |
| Caramagna |
1 |
| Caranero |
1 |
| Caranza |
1 |
| Carasco |
1 |
| Carasone |
1 |
| Carata |
1 |
| Carate |
1 |
| caravan trade |
1 |
| caravanserai |
1 |
| Caravate |
1 |
| Caravonica |
1 |
| carbon dating |
1 |
| Cardiff |
1 |
| Cardo Maximus |
3 |
| Caria |
6 |
| Caria Fortress |
3 |
| Carian Port |
4 |
| carnelian |
1 |
| Caron Limen |
1 |
| carp |
2 |
| Carpathian Mountains |
2 |
| carpentry |
1 |
| Carpi |
2 |
| carriage |
1 |
| Carthage |
2 |
| carved ivory |
1 |
| carved pottery |
1 |
| caryatids |
1 |
| case study |
1 |
| casino |
1 |
| Casino de Monte-Carlo |
1 |
| Casino de Spa Belgium |
1 |
| Casino di Venezia |
1 |
| casket |
3 |
| Caspian turtle |
1 |
| Cassander |
8 |
| Cassius Dion |
1 |
| Castile |
1 |
| castle keep |
2 |
| Castra ad Montanesium |
8 |
| Castra Martis |
3 |
| Castra Martis Historical Park |
2 |
| Castro Fortress (Tsarevo) |
1 |
| cat |
1 |
| Catalca |
1 |
| Catalhoyuk |
1 |
| catalog |
2 |
| catapult |
1 |
| catchment reservoir |
1 |
| Catharism |
1 |
| Cathedral of Our Lady Immaculate (St. Nicholas Cathedral) |
1 |
| Catholic Church |
1 |
| cattle |
6 |
| Caucasus |
2 |
| cavalry |
3 |
| cavarly |
1 |
| cave |
18 |
| cave bear |
2 |
| cave paintings |
7 |
| caves |
3 |
| Celebi Qadi |
1 |
| celestial sphere |
3 |
| cellar |
1 |
| Celle di Bulgheria |
3 |
| Celtic |
9 |
| Celtic kiln |
1 |
| Celtic shrine |
2 |
| Celtic sword |
2 |
| Celts |
17 |
| cemetery |
3 |
| censorship |
2 |
| centaury |
1 |
| Center for Arts and Local Crafts |
2 |
| Center for Cultural Heritage Interpretation |
1 |
| Center for Slavic and Byzantine Studies “Prof. Ivan Duychev” |
2 |
| Center for Underwater Archaeology at the Unversity of Southampton |
12 |
| Center for Underwater Archaeology Sozopol |
18 |
