| Reported in | Status | Registered by | ||
|---|---|---|---|---|
| Bacillus butanolivorans | Unknown | Valid (ICNP) | Excubia bot about 3 years ago | |
| Bacillus brevis | Unknown | Valid (ICNP) | Excubia bot about 3 years ago | |
| Bacillus borstelensis | Unknown | Valid (ICNP) | Excubia bot about 3 years ago | |
| Bacillus boroniphilus | Unknown | Valid (ICNP) | Excubia bot about 3 years ago | |
| Bacillus bogoriensis | Unknown | Valid (ICNP) | Excubia bot about 3 years ago | |
| Bacillus beveridgei | Unknown | Valid (ICNP) | Excubia bot about 3 years ago | |
| Bacillus berkeleyi | Unknown | Valid (ICNP) | Excubia bot about 3 years ago | |
| Bacillus beringensis | Unknown | Valid (ICNP) | Excubia bot about 3 years ago | |
| Bacillus beijingensis | Unknown | Valid (ICNP) | Excubia bot about 3 years ago | |
| Bacillus bataviensis | Unknown | Valid (ICNP) | Excubia bot about 3 years ago | |
| Bacillus barbaricus | Unknown | Valid (ICNP) | Excubia bot about 3 years ago | |
| Bacillus azotoformans | Unknown | Valid (ICNP) | Excubia bot about 3 years ago | |
| Bacillus azotofixans | Unknown | Valid (ICNP) | Excubia bot about 3 years ago | |
| Bacillus axarquiensis | Unknown | Valid (ICNP) | Excubia bot about 3 years ago | |
| Bacillus aurantiacus | Unknown | Valid (ICNP) | Excubia bot about 3 years ago | |
| Bacillus asahii | Unknown | Valid (ICNP) | Excubia bot about 3 years ago | |
| Bacillus aryabhattai | Unknown | Valid (ICNP) | Excubia bot about 3 years ago | |
| Bacillus arvi | Unknown | Valid (ICNP) | Excubia bot about 3 years ago | |
| Bacillus arsenicus | Unknown | Valid (ICNP) | Excubia bot about 3 years ago | |
| Bacillus arsenicoselenatis | Unknown | Valid (ICNP) | Excubia bot about 3 years ago | |
| Bacillus arseniciselenatis | Unknown | Valid (ICNP) | Excubia bot about 3 years ago | |
| Bacillus arenosi | Unknown | Valid (ICNP) | Excubia bot about 3 years ago | |
| Bacillus arachidis | Unknown | Valid (ICNP) | Excubia bot about 3 years ago | |
| Bacillus aquimaris | Unknown | Valid (ICNP) | Excubia bot about 3 years ago | |
| Bacillus antri | Unknown | Valid (ICNP) | Excubia bot about 3 years ago | |
| Bacillus aneurinolyticus | Unknown | Valid (ICNP) | Excubia bot about 3 years ago | |
| 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 |