| Annihilator Sentry Bot Mk.II | 80 | SentryBot |
| Annihilator Sentry Bot Mk.II | 0.1 | SentryBot |
| Annihilator Sentry Bot Mk.II | 0.1 | SentryBot |
| Announcement | 1 | Human |
| Announcer | 1 | Human |
| Announcer | 1 | Human |
| Announcer | 1 | Human |
| Announcer | 1 | Human |
| Announcer | 1 | Protectron |
| Ansel | 6 | Human |
| Anthropologist | 1 | Human |
| Antoine | 5 | Protectron |
| Antonio Russo | 66 | Human |
| Archaeologist | 6 | Human |
| Archery Instructor | 1 | Human |
| Archie the Kid | 1 | Human |
| Arena Guard | 66 | Human |
| Aries | 0.1 | Human |
| Aries | 0.1 | Human |
| Aries | 1 | Human |
| Arktos Pharma Assaultron | 17 | Assaultron |
| Arktos Pharma Dispatch | 1 | Human |
| Arktos Pharma EyeBot | 1 | EyeBot |
| Arktos Pharma Gutsy | 0.1 | Mr. Handy |
| Arktos Pharma Handy | 8 | Mr. Handy |
| Arktos Pharma Protectron | 5 | Protectron |
| Arktos Pharma Sentry Bot | 0.1 | SentryBot |
| Armor Rack | 1 | Human |
| Armor Rack | 1 | Human |
| Armor Rack | 1 | Human |
| Armor Rack | 1 | Human |
| Armored Deathclaw | 21 | Deathclaw |
| Armored Deathclaw | 50 | Deathclaw |
| Army Officer | 1 | Human |
| Art Knapp | 1 | Human |
| ARTEMIS | 46 | Assaultron |
| Ash Caver Aggressor | 100 | Human |
| Ash Caver Aggressor | 100 | Human |
| Ash Caver Flamer | 60 | Human |
| Ash Caver Militant | 60 | Human |
| Ash Caver Scrapmonger | 60 | Human |
| Ash Caver Sniper | 60 | Human |
| Ash Caver Tyrant | 100 | Human |
| Ash Forge System | 1 | Human |
| Ashley Ortega | 66 | Human |
| Ashmore | 1 | Human |
| AshTrey | 1 | Human |
| Aspiring Commie | 100 | Ghoul |
| Assaultron | 24 | Assaultron |
| Assaultron | 24 | Assaultron |