| australia | | uncultured hydrogenophaga sp. | species | 12 | 0 |
| australia | new south wales | uncultured hydrogenophaga sp. | species | 2 | 0 |
| australia | queensland | uncultured hydrogenophaga sp. | species | 1 | 0 |
| bangladesh | chittagong division | hydrogenophaga sp. enrichment culture | species | 16 | 0 |
| brazil | | uncultured hydrogenophaga sp. | species | 3 | 0 |
| canada | ontario | uncultured hydrogenophaga sp. | species | 1 | 0 |
| china | | uncultured hydrogenophaga sp. | species | 21 | 0 |
| china | heilongjiang | uncultured hydrogenophaga sp. | species | 1 | 0 |
| china | hubei | uncultured hydrogenophaga sp. | species | 1 | 0 |
| china | hunan | uncultured hydrogenophaga sp. | species | 4 | 0 |
| china | jiangsu | uncultured hydrogenophaga sp. | species | 1 | 0 |
| china | sichuan | uncultured hydrogenophaga sp. | species | 1 | 0 |
| china | tibet | uncultured hydrogenophaga sp. | species | 4 | 0 |
| cuba | | uncultured hydrogenophaga sp. | species | 1 | 0 |
| denmark | | hydrogenophaga sp. enrichment culture clone lpl1-271 | species | 1 | 0 |
| ethiopia | | uncultured hydrogenophaga sp. | species | 3 | 0 |
| france | | uncultured hydrogenophaga sp. | species | 1 | 0 |
| hungary | bacs-kiskun county | uncultured hydrogenophaga sp. | species | 5 | 0 |
| hungary | fejer county | uncultured hydrogenophaga sp. | species | 1 | 0 |
| india | | uncultured hydrogenophaga sp. | species | 4 | 0 |
| india | haryana | uncultured hydrogenophaga sp. | species | 1 | 0 |
| india | meghalaya | uncultured hydrogenophaga sp. | species | 3 | 0 |
| india | uttar pradesh | uncultured hydrogenophaga sp. | species | 3 | 0 |
| india | west bengal | uncultured hydrogenophaga sp. | species | 1 | 0 |
| italy | | uncultured hydrogenophaga sp. | species | 1 | 0 |
| japan | hokkaido prefecture | uncultured hydrogenophaga sp. | species | 4 | 0 |
| japan | kanagawa prefecture | uncultured hydrogenophaga sp. | species | 1 | 0 |
| japan | shizuoka prefecture | uncultured hydrogenophaga sp. | species | 8 | 0 |
| kenya | rift valley province | uncultured hydrogenophaga sp. | species | 16 | 0 |
| kuwait | | uncultured hydrogenophaga sp. | species | 2 | 0 |
| lithuania | | uncultured hydrogenophaga sp. | species | 1 | 0 |
| mexico | | uncultured hydrogenophaga sp. | species | 5 | 0 |
| mexico | yucatan | uncultured hydrogenophaga sp. | species | 1 | 0 |
| nigeria | | uncultured hydrogenophaga sp. | species | 3 | 0 |
| norway | svalbard | uncultured hydrogenophaga sp. | species | 1 | 0 |
| poland | | uncultured hydrogenophaga sp. | species | 2 | 0 |
| romania | bihor county | uncultured hydrogenophaga sp. | species | 1 | 0 |
| russia | | hydrogenophaga sp. enrichment culture | species | 1 | 0 |
| russia | | uncultured hydrogenophaga sp. | species | 1 | 0 |
| russia | krasnoyarsk krai | uncultured hydrogenophaga sp. | species | 8 | 0 |
| russia | novosibirsk oblast | uncultured hydrogenophaga sp. | species | 1 | 0 |
| singapore | | uncultured hydrogenophaga sp. | species | 3 | 0 |
| south africa | | uncultured hydrogenophaga sp. | species | 1 | 0 |
| spain | | uncultured hydrogenophaga sp. | species | 1 | 0 |
| spain | andalusia | uncultured hydrogenophaga sp. | species | 1 | 0 |
| svalbard and jan mayen | | uncultured hydrogenophaga sp. | species | 1 | 0 |
| switzerland | ticino region | uncultured hydrogenophaga sp. | species | 1 | 0 |
| tunisia | | uncultured hydrogenophaga sp. | species | 1 | 0 |
| united kingdom | | uncultured hydrogenophaga sp. | species | 1 | 0 |
| united states | | hydrogenophaga sp. enrichment culture | species | 4 | 0 |
| united states | | uncultured hydrogenophaga sp. | species | 3 | 0 |
| united states | georgia | uncultured hydrogenophaga sp. | species | 38 | 0 |
| united states | massachusetts | uncultured hydrogenophaga sp. | species | 2 | 0 |