| Reported in | Status | Registered by | ||
|---|---|---|---|---|
| Thermococcus waiotapuensis | Unknown | Valid (ICNP) | Excubia bot about 5 years ago | |
| Thermococcus thioreducens | Unknown | Valid (ICNP) | Excubia bot about 5 years ago | |
| Thermococcus stetteri | Unknown | Valid (ICNP) | Excubia bot about 5 years ago | |
| Thermococcus siculi | Unknown | Valid (ICNP) | Excubia bot about 5 years ago | |
| Thermococcus sibiricus | Unknown | Valid (ICNP) | Excubia bot about 5 years ago | |
| Thermococcus profundus | Unknown | Valid (ICNP) | Excubia bot about 5 years ago | |
| Thermococcus prieurii | Unknown | Valid (ICNP) | Excubia bot about 5 years ago | |
| Thermococcus piezophilus | Unknown | Valid (ICNP) | Excubia bot about 5 years ago | |
| Thermococcus peptonophilus | Unknown | Valid (ICNP) | Excubia bot about 5 years ago | |
| Thermococcus paralvinellae | Unknown | Valid (ICNP) | Excubia bot about 5 years ago | |
| Thermococcus pacificus | Unknown | Valid (ICNP) | Excubia bot about 5 years ago | |
| Thermococcus nautili | Unknown | Valid (ICNP) | Excubia bot about 5 years ago | |
| Thermococcus litoralis | Unknown | Valid (ICNP) | Excubia bot about 5 years ago | |
| Thermococcus kodakarensis | Unknown | Valid (ICNP) | Excubia bot about 5 years ago | |
| Thermococcus hydrothermalis | Unknown | Valid (ICNP) | Excubia bot about 5 years ago | |
| Thermococcus guaymasensis | Unknown | Valid (ICNP) | Excubia bot about 5 years ago | |
| Thermococcus gorgonarius | Unknown | Valid (ICNP) | Excubia bot about 5 years ago | |
| Thermococcus gammatolerans | Unknown | Valid (ICNP) | Excubia bot about 5 years ago | |
| Thermococcus fumicolans | Unknown | Valid (ICNP) | Excubia bot about 5 years ago | |
| Thermococcus eurythermalis | Unknown | Valid (ICNP) | Excubia bot about 5 years ago | |
| Thermococcus coalescens | Unknown | Valid (ICNP) | Excubia bot about 5 years ago | |
| Thermococcus cleftensis | Unknown | Valid (ICNP) | Excubia bot about 5 years ago | |
| Thermococcus chitonophagus | Unknown | Valid (ICNP) | Excubia bot about 5 years ago | |
| Thermococcus celericrescens | Unknown | Valid (ICNP) | Excubia bot about 5 years ago | |
| Thermococcus celer T | Unknown | Valid (ICNP) | Excubia bot about 5 years ago | |
| Thermococcus barossii | Unknown | Valid (ICNP) | Excubia bot about 5 years ago | |
| Thermococcus barophilus | Unknown | Valid (ICNP) | Excubia bot about 5 years ago | |
| Thermococcus atlanticus | Unknown | Valid (ICNP) | Excubia bot about 5 years ago | |
| Thermococcus alcaliphilus | Unknown | Valid (ICNP) | Excubia bot about 5 years ago | |
| Thermococcus aggregans | Unknown | Valid (ICNP) | Excubia bot about 5 years ago |