| Reported in | Status | Registered by | ||
|---|---|---|---|---|
| Bacillus subtilis subsp. spizizenii | Unknown | Valid (ICNP) | Excubia bot about 3 years ago | |
| Bacillus subtilis subsp. inaquosorum | Unknown | Valid (ICNP) | Excubia bot about 3 years ago | |
| Bacillus subterraneus | Unknown | Valid (ICNP) | Excubia bot about 3 years ago | |
| Bacillus suaedaesalsae | Unknown | Valid (ICNP) | Excubia bot about 3 years ago | |
| Bacillus suaedae | Unknown | Valid (ICNP) | Excubia bot about 3 years ago | |
| Bacillus stearothermophilus | Unknown | Valid (ICNP) | Excubia bot about 3 years ago | |
| Bacillus stamsii | Unknown | Valid (ICNP) | Excubia bot about 3 years ago | |
| Bacillus sporothermodurans | Unknown | Valid (ICNP) | Excubia bot about 3 years ago | |
| Bacillus sphaericus | Unknown | Valid (ICNP) | Excubia bot about 3 years ago | |
| Bacillus solisilvae | Unknown | Valid (ICNP) | Excubia bot about 3 years ago | |
| Bacillus solisalsi | Unknown | Valid (ICNP) | Excubia bot about 3 years ago | |
| Bacillus soli | Unknown | Valid (ICNP) | Excubia bot about 3 years ago | |
| Bacillus solani | Unknown | Valid (ICNP) | Excubia bot about 3 years ago | |
| Bacillus siralis | Unknown | Valid (ICNP) | Excubia bot about 3 years ago | |
| Bacillus simplex | Unknown | Valid (ICNP) | Excubia bot about 3 years ago | |
| Bacillus silvestris | Unknown | Valid (ICNP) | Excubia bot about 3 years ago | |
| Bacillus shackletonii | Unknown | Valid (ICNP) | Excubia bot about 3 years ago | |
| Bacillus shacheensis | Unknown | Valid (ICNP) | Excubia bot about 3 years ago | |
| Bacillus selenitireducens | Unknown | Valid (ICNP) | Excubia bot about 3 years ago | |
| Bacillus selenatarsenatis | Unknown | Valid (ICNP) | Excubia bot about 3 years ago | |
| Bacillus sediminis | Unknown | Valid (ICNP) | Excubia bot about 3 years ago | |
| Bacillus schlegelii | Unknown | Valid (ICNP) | Excubia bot about 3 years ago | |
| Bacillus salsus | Unknown | Valid (ICNP) | Excubia bot about 3 years ago | |
| Bacillus salis | Unknown | Valid (ICNP) | Excubia bot about 3 years ago | |
| Bacillus saliphilus | Unknown | Valid (ICNP) | Excubia bot about 3 years ago | |
| Bacillus salidurans | Unknown | Valid (ICNP) | Excubia bot about 3 years ago | |
| Bacillus salexigens | Unknown | Valid (ICNP) | Excubia bot about 3 years ago | |
| Bacillus salarius | Unknown | Valid (ICNP) | Excubia bot about 3 years ago | |
| Bacillus saganii | Unknown | Valid (ICNP) | Excubia bot about 3 years ago | |
| Bacillus ruris | Unknown | Valid (ICNP) | Excubia bot about 3 years ago |