| Information | Contact |
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| Sifnos Municipal Offices | 22843 60310 |
| Information Office | 22840 33661-31977 |
| Sifnos Citizen Service Centres | 22840 31006-31234 |
| Police Station | 22840 31210 |
| Port Authority | 22840 33617 |
| Platy Gialos Fishing Refuge | 22840 71365 |
| Hellenic Post Office | 22840 31329 |
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| Medical Information | Contact |
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| Sifnos Regional Medical Centre | 22840 31315 |
| Microbiology Lab Kleinakis Ioannis | 22840 31544-33677 |
| Physiotherapy Menegakis Nikolaos | 6986847059 |
| | |
| Dentists | Contact |
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| Sifnos Dental Centre Kottis Dimitris | 6986005006 |
| Dentist Papaggeletos Apostolos | 22840 32004 |
| Dentist Foutoulaki Katerina | 22840 32222 |
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| Pharmacies | Contact |
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| Pharmacy Vavritsas Konstantinos | 22840 33541 |
| Pharmacy Fotiadis Ioakim | 22840 33033 |
| Pharmacy Kikidis Babis | 22840 35210 |
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| Banks | Contact |
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| National Bank of Greece | 22840 35603-33605 |
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| Musuems | Contact |
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| Archaeological Museum | 22840 31022 |
| Folk Museum | 22840 31341 |
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| Ecclesiastical Museum – Holy Monastery of Vrisi | 22840 31335 |
| Acropolis Museum, Agios Andreas Hill | 22840 31488 |
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Melia Sifnos Houses 