| Ref |
nom du pays |
capitale |
monnaies |
continent |
drapeau |
| JAM | JAMAICA les timbres | Kingston | pound sterling = 20 shillings, Jamaican dollar = 100 cents (from 1969) | Amérique |  |
| JAP | JAPAN les timbres | Tokyo | yen = 100 sen | Asie |  |
| YER | JEMEN (REPUBLIKEN) les timbres | Sanaa 22 Mai 1990 | Rial yéménite (YER) | Asie |  |
| YAR | JEMEN ARABREPUBLIKEN (YAR) les timbres | Sana’a | North Yemini rial = 40 bogaches, North Yemeni rial = 100 fils (from 1978) | Asie |  |
| YES | JEMEN PDR les timbres | Aden | South Yemeni dinar = 1000 fils | Asie |  |
| JER | JERSEY les timbres | Saint Helier | pound sterling = 20 shillings, pound sterling =100 pence (from 1970) | Europe |  |
| JOR | JORDANIEN les timbres | Amman | Jordanian dinar = 1000 fils | Asie |  |
| BRO | JUDISKA AUTONOMA LÄNET BIROBIDZJAN (RYSSLAND) les timbres | Birobidzhan | ruble = 100 kopecks | Asie |  |
| YOU | JUGOSLAVIEN les timbres | Belgrade | Yugoslav dinar = 100 paras | Europe |  |
| CHR | JULÖN les timbres | The settlement | Australian dollar = 100 cents | Asie |  |
| VIR | JUNGFRUÖARNA (Brittiska) les timbres | Road Town | US dollar = 100 cents | Amérique |  |