| Reported in | Status | Registered by | ||
|---|---|---|---|---|
| Sphingomonas daechungensis | Unknown | Valid (ICNP) | Excubia bot about 5 years ago | |
| Sphingomonas cynarae | Unknown | Valid (ICNP) | Excubia bot about 5 years ago | |
| Sphingomonas crusticola | Unknown | Valid (ICNP) | Excubia bot about 5 years ago | |
| Sphingomonas crocodyli | Unknown | Valid (ICNP) | Excubia bot about 5 years ago | |
| Sphingomonas corticis | Unknown | Valid (ICNP) | Excubia bot about 5 years ago | |
| Sphingomonas colocasiae | Unknown | Valid (ICNP) | Excubia bot about 5 years ago | |
| Sphingomonas chungangi | Unknown | Valid (ICNP) | Excubia bot about 5 years ago | |
| Sphingomonas changnyeongensis | Unknown | Valid (ICNP) | Excubia bot about 5 years ago | |
| Sphingomonas changbaiensis | Unknown | Valid (ICNP) | Excubia bot about 5 years ago | |
| Sphingomonas carri | Unknown | Valid (ICNP) | Excubia bot about 5 years ago | |
| Sphingomonas carotinifaciens | Unknown | Valid (ICNP) | Excubia bot about 5 years ago | |
| Sphingomonas canadensis | Unknown | Valid (ICNP) | Excubia bot about 5 years ago | |
| Sphingomonas azotifigens | Unknown | Valid (ICNP) | Excubia bot about 5 years ago | |
| Sphingomonas aurantiaca | Unknown | Valid (ICNP) | Excubia bot about 5 years ago | |
| Sphingomonas astaxanthinifaciens | Unknown | Valid (ICNP) | Excubia bot about 5 years ago | |
| Sphingomonas asaccharolytica | Unknown | Valid (ICNP) | Excubia bot about 5 years ago | |
| Sphingomonas arantia | Unknown | Valid (ICNP) | Excubia bot about 5 years ago | |
| Sphingomonas aracearum | Unknown | Valid (ICNP) | Excubia bot about 5 years ago | |
| Sphingomonas aquatilis | Unknown | Valid (ICNP) | Excubia bot about 5 years ago | |
| Sphingomonas aquatica | Unknown | Valid (ICNP) | Excubia bot about 5 years ago | |
| Sphingomonas antarctica | Unknown | Valid (ICNP) | Excubia bot about 5 years ago | |
| Sphingomonas alpina | Unknown | Valid (ICNP) | Excubia bot about 5 years ago | |
| Sphingomonas agri | Unknown | Valid (ICNP) | Excubia bot about 5 years ago | |
| Sphingomonas aestuarii | Unknown | Valid (ICNP) | Excubia bot about 5 years ago | |
| Sphingomonas aerophila | Unknown | Valid (ICNP) | Excubia bot about 5 years ago | |
| Sphingomonas aerolata | Unknown | Valid (ICNP) | Excubia bot about 5 years ago | |
| Sphingomonas adhaesiva | Unknown | Valid (ICNP) | Excubia bot about 5 years ago | |
| Sphingomonas abaci | Unknown | Valid (ICNP) | Excubia bot about 5 years ago | |
| Sphingomonas | Unknown | Valid (ICNP) | Excubia bot about 5 years ago | |
| Sphingomicrobium marinum | Unknown | Valid (ICNP) | Excubia bot about 5 years ago |