| Reported in | Status | Registered by | ||
|---|---|---|---|---|
| Bacillus aneurinilyticus | Unknown | Valid (ICNP) | Excubia bot about 3 years ago | |
| Bacillus andreesenii | Unknown | Valid (ICNP) | Excubia bot about 3 years ago | |
| Bacillus amylolyticus | Unknown | Valid (ICNP) | Excubia bot about 3 years ago | |
| Bacillus amyloliquefaciens subsp. plantarum | Unknown | Valid (ICNP) | Excubia bot about 3 years ago | |
| Bacillus alvei | Unknown | Valid (ICNP) | Excubia bot about 3 years ago | |
| Bacillus alkalitolerans | Unknown | Valid (ICNP) | Excubia bot about 3 years ago | |
| Bacillus alkalitelluris | Unknown | Valid (ICNP) | Excubia bot about 3 years ago | |
| Bacillus alkalisediminis | Unknown | Valid (ICNP) | Excubia bot about 3 years ago | |
| Bacillus alkalinitrilicus | Unknown | Valid (ICNP) | Excubia bot about 3 years ago | |
| Bacillus alkalilacus | Unknown | Valid (ICNP) | Excubia bot about 3 years ago | |
| Bacillus alkalidiazotrophicus | Unknown | Valid (ICNP) | Excubia bot about 3 years ago | |
| Bacillus alkalicola | Unknown | Valid (ICNP) | Excubia bot about 3 years ago | |
| Bacillus alkalicellulosilyticus | Unknown | Valid (ICNP) | Excubia bot about 3 years ago | |
| Bacillus alginolyticus | Unknown | Valid (ICNP) | Excubia bot about 3 years ago | |
| Bacillus algicola | Unknown | Valid (ICNP) | Excubia bot about 3 years ago | |
| Bacillus alcalophilus | Unknown | Valid (ICNP) | Excubia bot about 3 years ago | |
| Bacillus akibai | Unknown | Valid (ICNP) | Excubia bot about 3 years ago | |
| Bacillus aidingensis | Unknown | Valid (ICNP) | Excubia bot about 3 years ago | |
| Bacillus agri | Unknown | Valid (ICNP) | Excubia bot about 3 years ago | |
| Bacillus agaradhaerens | Unknown | Valid (ICNP) | Excubia bot about 3 years ago | |
| Bacillus acidoterrestris | Unknown | Valid (ICNP) | Excubia bot about 3 years ago | |
| Bacillus acidocaldarius | Unknown | Valid (ICNP) | Excubia bot about 3 years ago | |
| Bacillus aciditolerans | Unknown | Valid (ICNP) | Excubia bot about 3 years ago | |
| Bacillus acidiproducens | Unknown | Valid (ICNP) | Excubia bot about 3 years ago | |
| Bacillus acidinfaciens | Unknown | Valid (ICNP) | Excubia bot about 3 years ago | |
| Bacillus acidiceler | Unknown | Valid (ICNP) | Excubia bot about 3 years ago | |
| Bacillus acanthi | Unknown | Valid (ICNP) | Excubia bot about 3 years ago | |
| Bacillus abyssalis | Unknown | Valid (ICNP) | Excubia bot about 3 years ago | |
| Azotobacter paspali | Unknown | Valid (ICNP) | Excubia bot about 3 years ago | |
| Azotobacter nigricans subsp. achromogenes | Unknown | Valid (ICNP) | Excubia bot about 3 years ago |