| Prefecture of Piraeus | +30 2104148516 | +30 2104111407 |
|---|---|---|
| Sub-Prefecture of Kythera | +30 2736033280 | +30 2736031556 |
| Municipality of Kythera | +30 2736031213 |
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| Taxis Office | +30 2736031295 |
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| County Court | +30 2736031650 |
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| Police Kythira | +30 2736031206 |
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| Police Potamos | +30 2736033222 |
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| Port Authority of Potamos | +30 2736031222 |
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| Port Authority of Agia Pelagia | +30 2736033280 |
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| Port Authority of Diakofti | +30 2736034222 |
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| Customs (Kapsali) | +30 2736031262 |
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| Public Power Corporation | +30 2736031207 |
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| OTE Telecommunications | +30 2736033299 | +30 2736033399 |
| Olympic Airways | +30 2736033362 |
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| Airport of Kythera | +30 2736033292 | +30 2736033297 |
| Military Aviation | +30 2736033226 |
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| Navy | +30 2736034218 |
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| National Meteorological Office | +30 2736031250 |
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| Archaeological Museum | +30 2736031739 |
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| Byzantine Museum | +30 2736031731 |
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| Ephorate of Byzantine Antiquities | +30 2736031195 |
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| Forestal Service | +30 2736033377 |
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| Fire Brigade | +30 2736033199 |
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| Hospital (Potamos) | +30 2736033203 |
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| Kythera Rural Surgery | +30 2736031243 |
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| Livadi Rural Surgery | +30 2736031536 |
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| Karvounades Rural Surgery | +30 2736038015 |
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| Potamos Rural Surgery | +30 2736033213 |
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| Veterinary Clinic | +30 2736031228 |
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| ATE BANK | +30 2736031221 |
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| Ethniki Bank (Kythira) | +30 2736031209 |
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| Ethniki Bank (Potamos) | +30 2736033209 |
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| Post Office (Kythira) | +30 2736031274 | |
| Post Office (Potamos) | +30 2736033225 | |
| Holy Diocese - Metropolis
|
+30 2736031281 | |
| Myrtidiotissa Monastery | +30 2736031184 | |
| Agia Elessa Monastery
|
+30 2736031083 | |
| Agia Moni Monastery | +30 2736033251 | |
| Ossios Theodoros Monastery | +30 2736033673 |
