| Reported in | Status | Registered by | ||
|---|---|---|---|---|
| Helicobacter mesocricetorum | Unknown | Valid (ICNP) | Excubia bot almost 5 years ago | |
| Helicobacter mehlei | Unknown | Valid (ICNP) | Excubia bot almost 5 years ago | |
| Helicobacter mastomyrinus | Unknown | Valid (ICNP) | Excubia bot almost 5 years ago | |
| Helicobacter marmotae | Unknown | Valid (ICNP) | Excubia bot almost 5 years ago | |
| Helicobacter macacae | Unknown | Valid (ICNP) | Excubia bot almost 5 years ago | |
| Helicobacter labacensis | Unknown | Valid (ICNP) | Excubia bot almost 5 years ago | |
| Helicobacter japonicus | Unknown | Valid (ICNP) | Excubia bot almost 5 years ago | |
| Helicobacter jaachi | Unknown | Valid (ICNP) | Excubia bot almost 5 years ago | |
| Helicobacter himalayensis | Unknown | Valid (ICNP) | Excubia bot almost 5 years ago | |
| Helicobacter hepaticus | Unknown | Valid (ICNP) | Excubia bot almost 5 years ago | |
| Helicobacter heilmannii | Unknown | Valid (ICNP) | Excubia bot almost 5 years ago | |
| Helicobacter ganmani | Unknown | Valid (ICNP) | Excubia bot almost 5 years ago | |
| Helicobacter fennelliae | Unknown | Valid (ICNP) | Excubia bot almost 5 years ago | |
| Helicobacter felis | Unknown | Valid (ICNP) | Excubia bot almost 5 years ago | |
| Helicobacter equorum | Unknown | Valid (ICNP) | Excubia bot almost 5 years ago | |
| Helicobacter enhydrae | Unknown | Valid (ICNP) | Excubia bot almost 5 years ago | |
| Helicobacter didelphidarum | Unknown | Valid (ICNP) | Excubia bot almost 5 years ago | |
| Helicobacter cynogastricus | Unknown | Valid (ICNP) | Excubia bot almost 5 years ago | |
| Helicobacter cinaedi | Unknown | Valid (ICNP) | Excubia bot almost 5 years ago | |
| Helicobacter cholecystus | Unknown | Valid (ICNP) | Excubia bot almost 5 years ago | |
| Helicobacter cetorum | Unknown | Valid (ICNP) | Excubia bot almost 5 years ago | |
| Helicobacter canis | Unknown | Valid (ICNP) | Excubia bot almost 5 years ago | |
| Helicobacter canicola | Unknown | Valid (ICNP) | Excubia bot almost 5 years ago | |
| Helicobacter canadensis | Unknown | Valid (ICNP) | Excubia bot almost 5 years ago | |
| Helicobacter brantae | Unknown | Valid (ICNP) | Excubia bot almost 5 years ago | |
| Helicobacter bizzozeronii | Unknown | Valid (ICNP) | Excubia bot almost 5 years ago | |
| Helicobacter bilis | Unknown | Valid (ICNP) | Excubia bot almost 5 years ago | |
| Helicobacter baculiformis | Unknown | Valid (ICNP) | Excubia bot almost 5 years ago | |
| Helicobacter aurati | Unknown | Valid (ICNP) | Excubia bot almost 5 years ago | |
| Helicobacter apri | Unknown | Valid (ICNP) | Excubia bot almost 5 years ago |