| (ICAO) | 0 | 0 | 0 | 4Y | |||||
| (WMO) | 0 | 0 | 0 | C7 | |||||
| A1* | Abu Ail, Jabal at Tair | As | 39 | 21 | 2 | 14N | 43E | J2/A | |
| T6 | Afghanistan | As | 40 | 21 | 4.5 | 35N | 69E | T6, YA | |
| 3B6 | Agalega & St Brandon | Af | 53 | 39 | 4 | 10S | 57E | 3B7 | |
| OH0 | Aland Is | Eu | 18 | 15 | 2 | 60N | 20E | ||
| KL | Alaska | NA | 0 | 1 | -8 | 58N | 134W | AL, NL, WL | |
| ZA | Albania | Eu | 28 | 15 | 1 | 41N | 20E | ZA | |
| VQ9* | Aldabra | Af | 53 | 39 | 4 | 9S | 46E | ||
| 7X | Algeria | Af | 37 | 33 | 0 | 37N | 3E | 7R, 7T-7Y | |
| KH8 | Am Samoa | Oc | 62 | 32 | -11 | 14S | 171W | AH8, NH8, WH8 | |
| FT_Z | Amsterdam & St Paul Is | Af | 68 | 39 | 5 | 38S | 78E | TX | |
| VU4 | Andaman & Nicobar Is | As | 49 | 26 | 5.5 | 12N | 93E | ||
| C3 | Andorra | Eu | 27 | 14 | 1 | 43N | 2E | C3 | |
| D2 | Angola | Af | 52 | 36 | 1 | 9S | 13E | D2-D3 | |
| VP2E | Anguilla | NA | 11 | 8 | -4 | 18N | 63W | ||
| 3C0 | Annobon Is | Af | 52 | 36 | -1 | 1S | 6E | ||
| CE9 | Antarctica | An | 0 | 0 | 0 | 90S | 0W | 3Y, 4K1, 8J1, AT0, DP0, FT_Y, KC4, LU_Z, OR4, R1AN, VK0, VP8, ZL | |
| V2 | Antigua, Barbuda | NA | 11 | 8 | -4 | 17N | 62W | V2 | |
| LU | Argentina | SA | 0 | 13 | -3 | 35S | 58W | AY-AZ, LO-L | |
| EK | Armenia | As | 29 | 21 | 4 | 40N | 45E | EK | UG |
| P4 | Aruba | SA | 11 | 9 | -4 | 13N | 70W | P4 | |
| ZD8 | Ascension Is | Af | 66 | 36 | 0 | 8S | 14W | ||
| FO0 | Austral Is | Oc | 63 | 32 | -10 | 23S | 149W | TX | |
| VK | Australia | Oc | 0 | 0 | 10 | 35S | 149E | AX, VH-VN, |