| Code | Name | Region |
|---|---|---|
| GRDOS | Delos | |
| GRDVN | Derveni | 54 |
| GRDKI | Dheskati | |
| GRDHI | Dhidhimotikhon | |
| GR9OP | Dhilesi | 3 |
| GRDTM | Dhistomon | 3 |
| GRDOX | Dhoxaton | |
| GRDHS | Dhrimos | 54 |
| GRDRS | Dhroseron | |
| GRAST | Astakos | |
| GRARS | Astros | 12 |
| GRJTY | Astypalaia | 81 |
| GRASV | Asvestochorion | 54 |
| GRATA | Atalandi | 6 |
| GRATL | Atherinolakos Ierapetras | M |
| GRATH | Athinai | I |
| GRATN | Athinios Thira Santorini | 82 |
| GRATT | Attiki | A1 |
| GRAVK | Avlai | 58 |
| GRVKL | Avlaki Stylidos | |
| GRAVA | Avlida | 64 |
| GRAVL | Avlon | |
| GRGAE | Avlona | 81 |
| GRGAA | Axioupoli | 57 |
| GRAYA | Ayia Marina | 4 |
| GRAYM | Ayia Marina | 6 |
| GRATR | Ayia Trias | |
| GRATM | Ayios Thomas | 3 |
| GRARE | Areopolis | |
| GRARG | Argos (argolis) | |
| GRARM | Argostolion | |
| GRARY | Argyropouli | 42 |
| GRAGY | Argyroupoli | A1 |
| GRGAC | Argyroupolis | 57 |
| GRARI | Aridaia | |
| GRARD | Arkioi Dodekanissou | 81 |
| GRARK | Arkitsa | 6 |
| GRARN | Arnaia | |
| GRART | Arta | |
| GRTEM | Artemis | |
| GRASO | Asopos | |
| GRASP | Aspra Spitia | 14 |
| GRASS | Aspropirgos | A1 |
| GRAPP | Aspropyrgos | I |
| GRAPO | Aspros | 57 |
| GRAPV | Asprovalta | |
| GRAIS | Assiros | 54 |
| GRSOS | Assos | 23 |
| GRAPN | Ampelonas | 42 |
| GRAMT | Amyntaio | 63 |