| NAME | TEL CODE | TELEPHONE | ADDRESS | POSTAL CODE | CITY |
| Agricultural Bank of Greece | 0671 | 22303 | Romanou square | 281 00 | ARGOSTOLI |
| Bank of Greece | 0671 | 22223 | P. Vallianou str. | 281 00 | ARGOSTOLI |
| Commercial Bank of Greece | 0671 | 22334 | 2, Lordou Vironos str. | 281 00 | ARGOSTOLI |
| Credit Bank | 0671 | 25181 | 20, Vergoti ave. | 281 00 | ARGOSTOLI |
| Ionian Bank | 0671 | 22316 | Ioanni Metaxa ave. | 281 00 | ARGOSTOLI |
| National Bank of Greece | 0671 | 22454 | 14, Sitemboron ave. | 281 00 | ARGOSTOLI |
| National Mortgage Bank | 0671 | 25192 | 90, I.Metaxa ave. | 281 00 | ARGOSTOLI |
| Postal Savings Bank | 0671 | 22124 | 17, Diadohou Constantinou str. | 281 00 | ARGOSTOLI |
| Agricultural Bank of Greece | 0671 | 91261 | 4, Iakovaton str. | 282 00 | LIXOURI |
| Agricultural Bank of Greece | 0671 | 91225 | 282 00 | LIXOURI | |
| Commercial Bank of Greece | 0671 | 91212 | 20, P.Ethn.Andistasis str. | 282 00 | LIXOURI |
| National Bank of Greece | 0671 | 92366 | 14, 5 Iroon str. | 282 00 | LIXOURI |
| Commercial Bank of Greece | 0674 | 22327 | 12, Andrea Miaouli str. | 280 80 | SAMI |
| NAME | TEL CODE | TELEPHONE | CITY |
| Argostoli Custom | 0671 | 22335 | ARGOSTOLI |
| Fiskardo Custom | 0674 | 51212 | FISKARDO |
| Lixouri Custom | 0671 | 91420 | LIXOURI |
| Sami Custom | 0674 | 22144 | SAMI |
| NAME | TEL CODE | TELEPHONE | POSTAL CODE | ADDRESS | CITY |
| Argostoli Firebrigade | 0671 | 23464, 23067 | 43, Harokopou str. | 281 00 | ARGOSTOLI |
| NAME | TEL CODE | TELEPHONE | ADDRESS | POSTAL CODE | CITY |
| OSTRIA | 0674 | 61194 | 280 81 | AGIA EVFIMIA | |
| CONTINENTAL | 0671 | 85373 | 281 00 | ARGOSTOLI | |
| ECHO KEFALONIAS- ITHAKIS | 0671 | 69552 | 281 00 | ARGOSTOLI | |
| IMERISIOS | 0671 | 25310, 87233 | 12, Rokou Vergoti Ave. | 281 00 | ARGOSTOLI |
| IONIAN GALAXY | 0671 | 25361 | 2, Diadohou Constantinou str. | 281 00 | ARGOSTOLI |
| KEFALONIA STAR | 0671 | 25261 | 92, Devosetou str. | 281 00 | ARGOSTOLI |
| NEA KEFALONIA | 0671 | 25310 | 12, Rokou Vergoti ave. | 281 00 | ARGOSTOLI |
| PALMOS | 0671 | 22257 | 281 00 | ARGOSTOLI | |
| TA CHRONIKA | 0671 | 22249 | 6, Vassiliou Vandorou str. | 281 00 | ARGOSTOLI |
| ALLAGI KEFALONIAS - ITHAKIS | 0661 | 28354 | 491 00 | KERKIRA | |
| ELEFTHRI RADIOFONIA OF KEFALONIA | 0671 | 91961 | 25, G.Lambraki str. | 282 00 | LIXOURI |
| NAME | TEL CODE | TELEPHONE | CITY |
| Agia Evfimia Port Office | 0674 | 61000 | AGIA EVFIMIA |
| Argostoli Port Office | 0671 | 22224 | ARGOSTOLI |
| Argostoli Port Office | 0671 | 91205 | LIXOURI |
| Poros Port Office | 0674 | 71460 | POROS |
| Sami Port Office | 0674 | 22031 | SAMI |
| NAME | TEL CODE | TELEPHONE | CITY |
| Tourist Information Office | 0671 | 22248 | ARGOSTOLI |
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