| Reported in | Status | Registered by | ||
|---|---|---|---|---|
| Bifidobacterium criceti | Unknown | Valid (ICNP) | Excubia bot over 4 years ago | |
| Bifidobacterium commune | Unknown | Valid (ICNP) | Excubia bot over 4 years ago | |
| Bifidobacterium choloepi | Unknown | Valid (ICNP) | Excubia bot over 4 years ago | |
| Bifidobacterium choerinum | Unknown | Valid (ICNP) | Excubia bot over 4 years ago | |
| Bifidobacterium cebidarum | Unknown | Valid (ICNP) | Excubia bot over 4 years ago | |
| Bifidobacterium catulorum | Unknown | Valid (ICNP) | Excubia bot over 4 years ago | |
| Bifidobacterium catenulatum subsp. kashiwanohense | Unknown | Valid (ICNP) | Excubia bot over 4 years ago | |
| Bifidobacterium catenulatum subsp. catenulatum | Unknown | Valid (ICNP) | Excubia bot over 4 years ago | |
| Bifidobacterium catenulatum | Unknown | Valid (ICNP) | Excubia bot over 4 years ago | |
| Bifidobacterium castoris | Unknown | Valid (ICNP) | Excubia bot over 4 years ago | |
| Bifidobacterium canis | Unknown | Valid (ICNP) | Excubia bot over 4 years ago | |
| Bifidobacterium callitrichos | Unknown | Valid (ICNP) | Excubia bot over 4 years ago | |
| Bifidobacterium callitrichidarum | Unknown | Valid (ICNP) | Excubia bot over 4 years ago | |
| Bifidobacterium callimiconis | Unknown | Valid (ICNP) | Excubia bot over 4 years ago | |
| Bifidobacterium breve | Unknown | Valid (ICNP) | Excubia bot over 4 years ago | |
| Bifidobacterium boum | Unknown | Valid (ICNP) | Excubia bot over 4 years ago | |
| Bifidobacterium bombi | Unknown | Valid (ICNP) | Excubia bot over 4 years ago | |
| Bifidobacterium bohemicum | Unknown | Valid (ICNP) | Excubia bot over 4 years ago | |
| Bifidobacterium bifidum T | Unknown | Valid (ICNP) | Excubia bot over 4 years ago | |
| Bifidobacterium biavatii | Unknown | Valid (ICNP) | Excubia bot over 4 years ago | |
| Bifidobacterium avesanii | Unknown | Valid (ICNP) | Excubia bot over 4 years ago | |
| Bifidobacterium asteroides | Unknown | Valid (ICNP) | Excubia bot over 4 years ago | |
| Bifidobacterium aquikefiri | Unknown | Valid (ICNP) | Excubia bot over 4 years ago | |
| Bifidobacterium apri | Unknown | Valid (ICNP) | Excubia bot over 4 years ago | |
| Bifidobacterium anseris | Unknown | Valid (ICNP) | Excubia bot over 4 years ago | |
| Bifidobacterium animalis subsp. lactis | Unknown | Valid (ICNP) | Excubia bot over 4 years ago | |
| Bifidobacterium animalis subsp. animalis | Unknown | Valid (ICNP) | Excubia bot over 4 years ago | |
| Bifidobacterium animalis | Unknown | Valid (ICNP) | Excubia bot over 4 years ago | |
| Bifidobacterium angulatum | Unknown | Valid (ICNP) | Excubia bot over 4 years ago | |
| Bifidobacterium aesculapii | Unknown | Valid (ICNP) | Excubia bot over 4 years ago |