| Reported in | Status | Registered by | ||
|---|---|---|---|---|
| Atrimonas | ||||
| Atrimonas thermophila T | Unknown | Valid (ICNP) | Excubia bot over 1 year ago | |
| Atlantibacter subterraneus | Unknown | Valid (ICNP) | Excubia bot over 1 year ago | |
| Asprobacillus argus T | Unknown | Valid (ICNP) | Excubia bot over 1 year ago | |
| Ascidiimonas meishanensis | Unknown | Valid (ICNP) | Excubia bot over 1 year ago | |
| Archangium lansingense | Unknown | Valid (ICNP) | Excubia bot over 1 year ago | |
| Aquibaculum sediminis | Unknown | Valid (ICNP) | Excubia bot over 1 year ago | |
| Antrihabitans spumae | Unknown | Valid (ICNP) | Excubia bot over 1 year ago | |
| Anoxybacterium | ||||
| Anoxybacterium hadale T | Unknown | Valid (ICNP) | Excubia bot over 1 year ago | |
| Amycolatopsis heterodermiae | Unknown | Valid (ICNP) | Excubia bot over 1 year ago | |
| Amphibiibacter | ||||
| Amphibiibacter pelophylacis T | Unknown | Valid (ICNP) | Excubia bot over 1 year ago | |
| Ammonicoccus | ||||
| Ammonicoccus fulvus T | Unknown | Valid (ICNP) | Excubia bot over 1 year ago | |
| Allotamlana | ||||
| Allotamlana fucoidanivorans T | Unknown | Valid (ICNP) | Excubia bot over 1 year ago | |
| Allomesorhizobium | ||||
| Allomesorhizobium camelthorni | Unknown | Valid (ICNP) | Excubia bot over 1 year ago | |
| Allomesorhizobium alhagi T | Unknown | Valid (ICNP) | Excubia bot over 1 year ago | |
| Aliiroseovarius conchicola | Unknown | Valid (ICNP) | Excubia bot over 1 year ago | |
| Aliirhizobium terrae | Unknown | Valid (ICNP) | Excubia bot over 1 year ago | |
| Albibacterium profundi | Unknown | Valid (ICNP) | Excubia bot over 1 year ago | |
| Afipia dichlorophenoxyacetatis | Unknown | Valid (ICNP) | Excubia bot over 1 year ago | |
| Aerobium | ||||
| Aerobium aerolatum T | Unknown | Valid (ICNP) | Excubia bot over 1 year ago | |
| Actinoplanes kirromycinicus | Unknown | Valid (ICNP) | Excubia bot over 1 year ago | |
| Actinomadura monticuli | Unknown | Valid (ICNP) | Excubia bot over 1 year ago | |
| Actinacidiphila polyblastidii | Unknown | Valid (ICNP) | Excubia bot over 1 year ago | |
| Acinetobacter thermotolerans | Unknown | Valid (ICNP) | Excubia bot over 1 year ago |