| Altaï | Altay |
| Altaïque | Altaic |
| Altaïr | Altair |
| Altbier | Altbier |
| Altbüron | Altbüron |
| Alte Kommandantur | Alte Kommandantur |
| Alte Nationalgalerie | Alte Nationalgalerie |
| Alte Pinakothek | Alte Pinakothek |
| Altea | Altea |
| Alteckendorf | Alteckendorf |
| Alteglofsheim | Alteglofsheim |
| Alten | Alten |
| Altena | Altena |
| Altenahr | Altenahr |
| Altenbeken | Altenbeken |
| Altenbourg | Altenburg |
| Altenheim | Altenheim |
| Altenkirchen | Altenkirchen |
| Altenmarkt im Pongau | Altenmarkt im Pongau |
| Altenstein | Altenstein |
| Altentreptow | Altentreptow |
| alter ego | alter ego |
| Alter Real | Alter Real |
| altercation | skirmish |
| Altermondialisme | Alter-globalization |
| alternance codique | code-switching |
| alternance de code | code-switching |
| Alternance vocalique | Indo-European ablaut |
| alternant | alternate |
| Alternanthera | Alternanthera |
| Alternate Mark Inversion | Bipolar encoding |
| alternateur | alternator |
| alternatif | alternative |
| alternative | alternative |
| Alternative bolivarienne pour les Amériques | Bolivarian Alternative for the Americas |
| Alternative Investment Market | Alternative Investment Market |
| Alternative libertaire | Alternative libertaire |
| Alternative libérale | Liberal Alternative |
| Alternative orange | Orange Alternative |
| Alternative sociale | Social Alternative |
| Alternativité | Nonassociative algebra |
| alterner | alternate |
