| Reported in | Status | Registered by | ||
|---|---|---|---|---|
| Bifidobacterium goeldii | Unknown | Valid (ICNP) | Excubia bot about 3 years ago | |
| Bifidobacterium globosum | Unknown | Valid (ICNP) | Excubia bot about 3 years ago | |
| Bifidobacterium gallinarum | Unknown | Valid (ICNP) | Excubia bot about 3 years ago | |
| Bifidobacterium gallinarum subsp. saeculare | Unknown | Valid (ICNP) | Excubia bot about 3 years ago | |
| Bifidobacterium gallicum | Unknown | Valid (ICNP) | Excubia bot about 3 years ago | |
| Bifidobacterium felsineum | Unknown | Valid (ICNP) | Excubia bot about 3 years ago | |
| Bifidobacterium faecale | Unknown | Valid (ICNP) | Excubia bot about 3 years ago | |
| Bifidobacterium eulemuris | Unknown | Valid (ICNP) | Excubia bot about 3 years ago | |
| Bifidobacterium erythrocebi | Unknown | Valid (ICNP) | Excubia bot about 3 years ago | |
| Bifidobacterium dolichotidis | Unknown | Valid (ICNP) | Excubia bot about 3 years ago | |
| Bifidobacterium dentium | Unknown | Valid (ICNP) | Excubia bot about 3 years ago | |
| Bifidobacterium cuniculi | Unknown | Valid (ICNP) | Excubia bot about 3 years ago | |
| Bifidobacterium criceti | Unknown | Valid (ICNP) | Excubia bot about 3 years ago | |
| Bifidobacterium commune | Unknown | Valid (ICNP) | Excubia bot about 3 years ago | |
| Bifidobacterium choloepi | Unknown | Valid (ICNP) | Excubia bot about 3 years ago | |
| Bifidobacterium choerinum | Unknown | Valid (ICNP) | Excubia bot about 3 years ago | |
| Bifidobacterium cebidarum | Unknown | Valid (ICNP) | Excubia bot about 3 years ago | |
| Bifidobacterium catulorum | Unknown | Valid (ICNP) | Excubia bot about 3 years ago | |
| Bifidobacterium catenulatum subsp. kashiwanohense | Unknown | Valid (ICNP) | Excubia bot about 3 years ago | |
| Bifidobacterium catenulatum subsp. catenulatum | Unknown | Valid (ICNP) | Excubia bot about 3 years ago | |
| Bifidobacterium catenulatum | Unknown | Valid (ICNP) | Excubia bot about 3 years ago | |
| Bifidobacterium castoris | Unknown | Valid (ICNP) | Excubia bot about 3 years ago | |
| Bifidobacterium canis | Unknown | Valid (ICNP) | Excubia bot about 3 years ago | |
| Bifidobacterium callitrichos | Unknown | Valid (ICNP) | Excubia bot about 3 years ago | |
| Bifidobacterium callitrichidarum | Unknown | Valid (ICNP) | Excubia bot about 3 years ago | |
| Bifidobacterium callimiconis | Unknown | Valid (ICNP) | Excubia bot about 3 years ago | |
| Bifidobacterium breve | Unknown | Valid (ICNP) | Excubia bot about 3 years ago | |
| Bifidobacterium boum | Unknown | Valid (ICNP) | Excubia bot about 3 years ago | |
| Bifidobacterium bombi | Unknown | Valid (ICNP) | Excubia bot about 3 years ago | |
| Bifidobacterium bohemicum | Unknown | Valid (ICNP) | Excubia bot about 3 years ago |