| Reported in | Status | Registered by | ||
|---|---|---|---|---|
| Nocardia albiluteola | Unknown | Valid (ICNP) | Excubia bot over 3 years ago | |
| Nocardia acididurans | Unknown | Valid (ICNP) | Excubia bot over 3 years ago | |
| Nitrospirillum irinus | Unknown | Valid (ICNP) | Excubia bot over 3 years ago | |
| Nitrospira marina T | Unknown | Valid (ICNP) | Excubia bot over 3 years ago | |
| Nitrospina | Unknown | Valid (ICNP) | Excubia bot over 3 years ago | |
| Nitrospina gracilis T | Unknown | Valid (ICNP) | Excubia bot over 3 years ago | |
| Nitrosospira briensis T | Unknown | Valid (ICNP) | Excubia bot over 3 years ago | |
| Nitrosophilus labii | Unknown | Valid (ICNP) | Excubia bot over 3 years ago | |
| Nitrosolobus | Unknown | Valid (ICNP) | Excubia bot over 3 years ago | |
| Nitrosolobus multiformis T | Unknown | Valid (ICNP) | Excubia bot over 3 years ago | |
| Nitrosococcus oceanus | Unknown | Valid (ICNP) | Excubia bot over 3 years ago | |
| Nitrosococcus nitrosus T | Unknown | Valid (ICNP) | Excubia bot over 3 years ago | |
| Nitrogeniibacter aestuarii | Unknown | Valid (ICNP) | Excubia bot over 3 years ago | |
| Nitratireductor rhodophyticola | Unknown | Valid (ICNP) | Excubia bot over 3 years ago | |
| Nitratidesulfovibrio termitidis | Unknown | Valid (ICNP) | Excubia bot over 3 years ago | |
| Nitratidesulfovibrio oxamicus | Unknown | Valid (ICNP) | Excubia bot over 3 years ago | |
| Nicolia | Unknown | Valid (ICNP) | Excubia bot over 3 years ago | |
| Nicolia spurrieriana T | Unknown | Valid (ICNP) | Excubia bot over 3 years ago | |
| Niallia endozanthoxylica | Unknown | Valid (ICNP) | Excubia bot over 3 years ago | |
| Niabella beijingensis | Unknown | Valid (ICNP) | Excubia bot over 3 years ago | |
| Niabella agricola | Unknown | Valid (ICNP) | Excubia bot over 3 years ago | |
| Nesterenkonia sedimenti | Unknown | Valid (ICNP) | Excubia bot over 3 years ago | |
| Nesterenkonia haasae | Unknown | Valid (ICNP) | Excubia bot over 3 years ago | |
| Nesiotobacter | Unknown | Valid (ICNP) | Excubia bot over 3 years ago | |
| Nesiotobacter exalbescens T | Unknown | Valid (ICNP) | Excubia bot over 3 years ago | |
| Neotabrizicola | Unknown | Valid (ICNP) | Excubia bot over 3 years ago | |
| Neotabrizicola shimadae T | Unknown | Valid (ICNP) | Excubia bot over 3 years ago | |
| Neoroseomonas | Unknown | Valid (ICNP) | Excubia bot over 3 years ago | |
| Neoroseomonas terrae | Unknown | Valid (ICNP) | Excubia bot over 3 years ago | |
| Neoroseomonas soli | Unknown | Valid (ICNP) | Excubia bot over 3 years ago |