| name | type | date First Ascent | Height (m) | Range | latitude (°) | longitude (°) | Prominence (m) | Map |
|---|---|---|---|---|---|---|---|---|
| Acamarachi | Volcanic Mountains | After 1939 | 6,046 | Andes | -23.2999992371 | -67.6166687012 | 1,608 |  |
| Aconcagua | Unspecified | 14/01/1897 | 6,961 | Andes | -32.6500015259 | -70.0000000000 | 6,961 | |
| Aiguille d'Argentière | Plateau Mountains | After 15/07/1864 | 3,901 | Mont Blanc massif | 45.9500007629 | 7.0166668892 | 473 | |
| Aiguille de Rochefort | Plateau Mountains | 14/08/1873 | 4,001 | ALPS | 45.8499984741 | 6.9499998093 | 106 | |
| Aiguille de Scolette | Fold Mountains | 1875 | 3,506 | ALPS | 45.1500015259 | 6.7666668892 | 1,069 | |
| Ailefroide | Fold Mountains | 07/07/1870 | 3,954 | ALPS | 44.8833351135 | 6.3499999046 | 762 | |
| Aletschhorn | Fold Mountains | After 18/06/1859 | 4,193 | ALPS | 46.4500007629 | 7.9833331108 | 1,029 | |
| Alluitz | Unspecified | 1867 | 1,034 | Basque mountains | 43.1666679382 | -2.6333334446 | 88 | |
| Alpamayo | Fold Mountains | from 20/06/1957 | 5,947 | Cordillera Blanca | -8.8791666031 | -77.6536636353 | 447 | |
| Ampato | Volcanic Mountains | Before 1450 | 6,288 | Cordillera Ampato | -15.8166666031 | -71.8833312988 | 1,997 | |