| alternativ | alternative |
| alternativ konfliktlösning | alternative dispute resolution |
| alternativ teknik | alternative technology |
| Alternativa kosmologiska modeller | Non-standard cosmology |
| Alternative metal | Alternative metal |
| Alternativmedicin | Alternative medicine |
| alternativt | alternatively |
| alternativt material | alternative material |
| Alternativvetenskap | Protoscience |
| Alternativvärld Historia | Alternative history |
| alternera | alternate |
| alternerande | alternate |
| Alternerande serie | Alternating series |
| Alterswil | Alterswil |
| altfiol | viola |
| althorn | althorn |
| Altiero Spinelli | Altiero Spinelli |
| Altiplano | Altiplano |
| Altirhinus kurzanovi | Altirhinus |
| altitud | altitude |
| altklav | alto clef |
| Altmünster | Altmünster |
| Alto Malcantone | Alto Malcantone |
| Alto Paraguay | Alto Paraguay Department |
| Alto Paraná | Alto Paraná Department |
| Altocumulus | Altocumulus cloud |
| Altonfördraget | Treaty of Alton |
| Altostratus | Altostratus cloud |
| Altran | Altran |
| Altranstädt | Altranstädt |
| Altria Group | Altria Group |
| altruism | altruism |
