| Reported in | Status | Registered by | ||
|---|---|---|---|---|
| Ochrobactrum anthropi T | Unknown | Valid (ICNP) | Excubia bot about 3 years ago | |
| Oceanospirillum pusillum | Unknown | Valid (ICNP) | Excubia bot about 3 years ago | |
| Oceanospirillum pelagicum | Unknown | Valid (ICNP) | Excubia bot about 3 years ago | |
| Oceanospirillum minutulum | Unknown | Valid (ICNP) | Excubia bot about 3 years ago | |
| Oceanospirillum maris subsp. williamsae | Unknown | Valid (ICNP) | Excubia bot about 3 years ago | |
| Oceanospirillum maris subsp. maris | Unknown | Valid (ICNP) | Excubia bot about 3 years ago | |
| Oceanospirillum maris subsp. hiroshimense | Unknown | Valid (ICNP) | Excubia bot about 3 years ago | |
| Oceanospirillum kriegii | Unknown | Valid (ICNP) | Excubia bot about 3 years ago | |
| Oceanospirillum japonicum | Unknown | Valid (ICNP) | Excubia bot about 3 years ago | |
| Oceanospirillum jannaschii | Unknown | Valid (ICNP) | Excubia bot about 3 years ago | |
| Oceanospirillum hiroshimense | Unknown | Valid (ICNP) | Excubia bot about 3 years ago | |
| Oceanospirillum commune | Unknown | Valid (ICNP) | Excubia bot about 3 years ago | |
| Oceanospirillum beijerinckii subsp. pelagicum | Unknown | Valid (ICNP) | Excubia bot about 3 years ago | |
| Oceanospirillum beijerinckii subsp. beijerinckii | Unknown | Valid (ICNP) | Excubia bot about 3 years ago | |
| Oceanomonas | Unknown | Valid (ICNP) | Excubia bot about 3 years ago | |
| Oceanomonas doudoroffii T | Unknown | Valid (ICNP) | Excubia bot about 3 years ago | |
| Oceanomonas baumannii | Unknown | Valid (ICNP) | Excubia bot about 3 years ago | |
| Oceanobacter mangrovi | Unknown | Valid (ICNP) | Excubia bot about 3 years ago | |
| Oceanobacillus soja | Unknown | Valid (ICNP) | Excubia bot about 3 years ago | |
| Oceanobacillus salinisoli | Unknown | Valid (ICNP) | Excubia bot about 3 years ago | |
| Oceanobacillus alkalisoli | Unknown | Valid (ICNP) | Excubia bot about 3 years ago | |
| Oceanitalea | Unknown | Valid (ICNP) | Excubia bot about 3 years ago | |
| Oceanitalea nanhaiensis T | Unknown | Valid (ICNP) | Excubia bot about 3 years ago | |
| Oceaniglobus trochenteri | Unknown | Valid (ICNP) | Excubia bot about 3 years ago | |
| Oceaniferula | Unknown | Valid (ICNP) | Excubia bot about 3 years ago | |
| Oceaniferula marina T | Unknown | Valid (ICNP) | Excubia bot about 3 years ago | |
| Oceanidesulfovibrio | Unknown | Valid (ICNP) | Excubia bot about 3 years ago | |
| Oceanidesulfovibrio marinus | Unknown | Valid (ICNP) | Excubia bot about 3 years ago | |
| Oceanidesulfovibrio indonesiensis | Unknown | Valid (ICNP) | Excubia bot about 3 years ago | |
| Oceanidesulfovibrio gabonensis T | Unknown | Valid (ICNP) | Excubia bot about 3 years ago |