| alternativo | alternate |
| alterno | alternate |
| Alterswil | Alterswil |
| Altes Museum | Altes Museum |
| Alteza | Highness |
| Althaea | Althaea |
| Althaea officinalis | Althaea officinalis |
| Althen-des-Paluds | Althen-des-Paluds |
| Altiani | Altiani |
| altibajos | ups and downs |
| Altichiero | Altichiero |
| Altiero Spinelli | Altiero Spinelli |
| Altillac | Altillac |
| Altingiaceae | Altingiaceae |
| Altiphrynoides | Altiphrynoides |
| Altiplanicie Mexicana | Mexican Plateau |
| altiplano | plateau |
| Altiplano andino | Altiplano |
| Altirhinus | Altirhinus |
| altisonante | high-flown |
| Altispinax | Altispinax |
| altitud | altitude |
| altivez | arrogance |
| altivo | haughty |
| Altmark | Altmark |
| Altmarkkreis Salzwedel | Altmarkkreis Salzwedel |
| alto | stop |
| Alto Administrador de Escocia | High Steward of Scotland |
| Alto Ampurdán | Alt Empordà |
| Alto Aneu | Alt Àneu |
| Alto Aragón | High Aragon |
| Alto Canadá | Upper Canada |
| alto comisario | high commissioner |
| Alto Comisionado de las Naciones Unidas para los Refugiados | United Nations High Commissioner for Refugees |
| Alto Demerara-Berbice | Upper Demerara-Berbice |
| Alto Egipto | Upper Egypt |
| alto el fuego | cease-fire |
| Alto Garona | Haute-Garonne |
| alto horno | blast furnace |
| Alto Islandés | High Icelandic |
| Alto Karabaj | Nagorno-Karabakh |
| Alto Katanga | Haut-Katanga Province |
| Alto Loira | Haute-Loire |
| Alto Lomami | Haut-Lomami Province |
| Alto Maestrazgo | Alt Maestrat |
| Alto Malcantone | Alto Malcantone |
| Alto Marne | Haute-Marne |
| Alto Palatinado | Upper Palatinate |
| Alto Paraguay | Alto Paraguay Department |
| Alto Penedés | Alt Penedès |
| Alto Perú | Upper Peru |
| alto precio | costliness |
| alto relieve | high relief |
| Alto Rin | Haut-Rhin |
| Alto Saona | Haute-Saône |
| Alto sórabo | Upper Sorbian |
| Alto Tacutu-Alto Esequibo | Upper Takutu-Upper Essequibo |
| Alto Takutu-Alto Essequibo | Upper Takutu-Upper Essequibo |
| Alto Tribunal Penal iraquí | Supreme Iraqi Criminal Tribunal |
| Alto Trás-os-Montes | Alto Trás-os-Montes |
| Alto Uele | Haut-Uele Province |
| Alto Urgel | Alt Urgell |
| Alto Vienne | Haute-Vienne |
| Alto Volta | Upper Volta |
| alto voltaje | high voltage |
