| Reported in | Status | Registered by | ||
|---|---|---|---|---|
| Aspromonas | Unknown | Valid (ICNP) | Excubia bot about 3 years ago | |
| Aspromonas composti T | Unknown | Valid (ICNP) | Excubia bot about 3 years ago | |
| Asinibacterium | Unknown | Valid (ICNP) | Excubia bot about 3 years ago | |
| Asinibacterium lactis T | Unknown | Valid (ICNP) | Excubia bot about 3 years ago | |
| Asaia lannaensis | Unknown | Valid (ICNP) | Excubia bot about 3 years ago | |
| Asaia astilbes | Unknown | Valid (ICNP) | Excubia bot about 3 years ago | |
| Asaccharobacter | Unknown | Valid (ICNP) | Excubia bot about 3 years ago | |
| Asaccharobacter celatus T | Unknown | Valid (ICNP) | Excubia bot about 3 years ago | |
| Arthrospiribacter | Unknown | Valid (ICNP) | Excubia bot about 3 years ago | |
| Arthrospiribacter ruber T | Unknown | Valid (ICNP) | Excubia bot about 3 years ago | |
| Arthrobacter viscosus | Unknown | Valid (ICNP) | Excubia bot about 3 years ago | |
| Arthrobacter variabilis | Unknown | Valid (ICNP) | Excubia bot about 3 years ago | |
| Arthrobacter ureafaciens | Unknown | Valid (ICNP) | Excubia bot about 3 years ago | |
| Arthrobacter uratoxydans | Unknown | Valid (ICNP) | Excubia bot about 3 years ago | |
| Arthrobacter tumescens | Unknown | Valid (ICNP) | Excubia bot about 3 years ago | |
| Arthrobacter terregens | Unknown | Valid (ICNP) | Excubia bot about 3 years ago | |
| Arthrobacter sunyaminii | Unknown | Valid (ICNP) | Excubia bot about 3 years ago | |
| Arthrobacter sulfureus | Unknown | Valid (ICNP) | Excubia bot about 3 years ago | |
| Arthrobacter sulfonivorans | Unknown | Valid (ICNP) | Excubia bot about 3 years ago | |
| Arthrobacter soli | Unknown | Valid (ICNP) | Excubia bot about 3 years ago | |
| Arthrobacter simplex | Unknown | Valid (ICNP) | Excubia bot about 3 years ago | |
| Arthrobacter siderocapsulatus | Unknown | Valid (ICNP) | Excubia bot about 3 years ago | |
| Arthrobacter siccitolerans | Unknown | Valid (ICNP) | Excubia bot about 3 years ago | |
| Arthrobacter scleromae | Unknown | Valid (ICNP) | Excubia bot about 3 years ago | |
| Arthrobacter sanguinis | Unknown | Valid (ICNP) | Excubia bot about 3 years ago | |
| Arthrobacter radiotolerans | Unknown | Valid (ICNP) | Excubia bot about 3 years ago | |
| Arthrobacter psychrophenolicus | Unknown | Valid (ICNP) | Excubia bot about 3 years ago | |
| Arthrobacter protophormiae | Unknown | Valid (ICNP) | Excubia bot about 3 years ago | |
| Arthrobacter polychromogenes | Unknown | Valid (ICNP) | Excubia bot about 3 years ago | |
| Arthrobacter polaris | Unknown | Valid (ICNP) | Excubia bot about 3 years ago |