| Reported in | Status | Registered by | ||
|---|---|---|---|---|
| Conglomeromonas largomobilis subsp. largomobilis | Unknown | Valid (ICNP) | Excubia bot over 3 years ago | |
| Confluentimicrobium | Unknown | Valid (ICNP) | Excubia bot over 3 years ago | |
| Confluentimicrobium naphthalenivorans | Unknown | Valid (ICNP) | Excubia bot over 3 years ago | |
| Confluentimicrobium lipolyticum T | Unknown | Valid (ICNP) | Excubia bot over 3 years ago | |
| Conexivisphaera | Unknown | Valid (ICNP) | Excubia bot over 3 years ago | |
| Conchiformibium | Unknown | Valid (ICNP) | Excubia bot over 3 years ago | |
| Conchiformibium steedae T | Unknown | Valid (ICNP) | Excubia bot over 3 years ago | |
| Conchiformibium kuhniae | Unknown | Valid (ICNP) | Excubia bot over 3 years ago | |
| Comamonas thiooxidans | Unknown | Valid (ICNP) | Excubia bot over 3 years ago | |
| Comamonas fluminis | Unknown | Valid (ICNP) | Excubia bot over 3 years ago | |
| Comamonas acidovorans | Unknown | Valid (ICNP) | Excubia bot over 3 years ago | |
| Colwellia psychroerythrus | Unknown | Valid (ICNP) | Excubia bot over 3 years ago | |
| Colwellia maritima | Unknown | Valid (ICNP) | Excubia bot over 3 years ago | |
| Colwellia hadaliensis | Unknown | Valid (ICNP) | Excubia bot over 3 years ago | |
| Colwellia demingae | Unknown | Valid (ICNP) | Excubia bot over 3 years ago | |
| Collinsella ihumii | Unknown | Valid (ICNP) | Excubia bot over 3 years ago | |
| Collimonas silvisoli | Unknown | Valid (ICNP) | Excubia bot over 3 years ago | |
| Collimonas humicola | Unknown | Valid (ICNP) | Excubia bot over 3 years ago | |
| Cohnella zeiphila | Unknown | Valid (ICNP) | Excubia bot over 3 years ago | |
| Cohnella herbarum | Unknown | Valid (ICNP) | Excubia bot over 3 years ago | |
| Cohnella damensis | Unknown | Valid (ICNP) | Excubia bot over 3 years ago | |
| Cognatiyoonia sediminum | Unknown | Valid (ICNP) | Excubia bot over 3 years ago | |
| Cognaticolwellia | Unknown | Valid (ICNP) | Excubia bot over 3 years ago | |
| Cognaticolwellia sediminilitoris | Unknown | Valid (ICNP) | Excubia bot over 3 years ago | |
| Cognaticolwellia mytili | Unknown | Valid (ICNP) | Excubia bot over 3 years ago | |
| Cognaticolwellia beringensis | Unknown | Valid (ICNP) | Excubia bot over 3 years ago | |
| Cognaticolwellia aestuarii T | Unknown | Valid (ICNP) | Excubia bot over 3 years ago | |
| Cognatazoarcus | Unknown | Valid (ICNP) | Excubia bot over 3 years ago | |
| Cognatazoarcus halotolerans T | Unknown | Valid (ICNP) | Excubia bot over 3 years ago | |
| Cognataquiflexum | Unknown | Valid (ICNP) | Excubia bot over 3 years ago |