| NAME | TEL CODE | TELEPHONE | POSTAL CODE | CITY |
| Kalymnos Agricultural Bank of Greece | 0243 | 28944 | 852 00 | KALYMNOS |
| Kalymnos Commercial Bank | 0243 | 29475 | 852 00 | KALYMNOS |
| Kalymnos Ionian Bank | 0243 | 28685 | 852 00 | KALYMNOS |
| Kalymnos National Bank of Greece | 0243 | 28312, 28850 | 852 00 | KALYMNOS |
| NAME | TEL CODE | TELEPHONE | POSTAL CODE | CITY |
| Kalymnos Custom | 0243 | 28862 | 852 00 | KALYMNOS |
| NAME | TEL CODE | TELEPHONE | POSTAL CODE | CITY |
| Drosos Kalymnos | 0243 | 28061 | 852 00 | KALYMNOS |
| Municipal Radio Station of Kalymnos | 0243 | 23888, 28555 | 852 00 | KALYMNOS |
| Newspaper "Eleftheri Kalymnos" | 0243 | 22723 | 852 00 | KALYMNOS |
| Radio Kalymnos | 0243 | 23888 | 852 00 | KALYMNOS |
| NAME | TEL CODE | TELEPHONE | POSTAL CODE | CITY |
| Kalymnos Port Office | 0243 | 29304 | 852 00 | KALYMNOS |
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