| australia | | gallionella sp. pn013 | species | 1 | 0 |
| australia | | sideroxydans sp. pn022 | species | 1 | 0 |
| australia | | sideroxydans sp. pn032 | species | 1 | 0 |
| australia | | uncultured gallionella sp. | species | 3 | 0 |
| bangladesh | chittagong division | uncultured gallionellaceae bacterium | species | 11 | 0 |
| bangladesh | rajshahi division | uncultured gallionellaceae bacterium | species | 663 | 0 |
| canada | british columbia | gallionella sp. | species | 2 | 0 |
| canada | nunavut | gallionella sp. uba4121 | species | 1 | 0 |
| canada | nunavut | gallionella sp. uba4666 | species | 1 | 0 |
| canada | nunavut | gallionella sp. uba4737 | species | 1 | 0 |
| canada | nunavut | gallionella sp. uba5154 | species | 1 | 0 |
| canada | nunavut | gallionella sp. uba6045 | species | 1 | 0 |
| china | | uncultured gallionella sp. | species | 12 | 0 |
| china | | uncultured sideroxydans sp. | species | 1 | 0 |
| china | beijing | gallionella | genus | 0 | 1 |
| china | beijing | sideroxydans | genus | 0 | 1 |
| china | guangdong | gallionella | genus | 0 | 1 |
| china | tibet | uncultured sideroxydans sp. | species | 1 | 0 |
| finland | | uncultured sideroxydans sp. | species | 1 | 0 |
| germany | | gallionella sp. ja52 | species | 1 | 0 |
| germany | | uncultured gallionellaceae bacterium | species | 1 | 0 |
| india | | uncultured gallionella sp. | species | 2 | 0 |
| india | | uncultured sideroxydans sp. | species | 2 | 0 |
| japan | aichi prefecture | gallionellaceae bacterium an22 | species | 3 | 0 |
| japan | aichi prefecture | uncultured gallionellaceae bacterium | species | 51 | 0 |
| japan | akita prefecture | uncultured gallionellaceae bacterium | species | 37 | 0 |
| japan | ishikawa prefecture | uncultured gallionella sp. | species | 1 | 0 |
| japan | okayama prefecture | uncultured gallionellaceae bacterium | species | 2 | 0 |
| japan | shimane prefecture | uncultured gallionella sp. | species | 27 | 0 |
| netherlands | | gallionella sp. | species | 2 | 0 |
| netherlands | | uncultured gallionella sp. | species | 2 | 0 |
| new zealand | auckland | gallionella sp. | species | 1 | 0 |
| new zealand | canterbury | gallionella sp. | species | 1 | 0 |
| philippines | calabarzon region | uncultured gallionellaceae bacterium | species | 284 | 0 |
| russia | irkutsk oblast | candidatus gallionella acididurans | species | 327 | 0 |
| russia | irkutsk oblast | uncultured gallionella sp. | species | 1 | 0 |
| russia | yaroslavl oblast | uncultured gallionellaceae bacterium | species | 1 | 0 |
| russia | zabaykalsky krai | uncultured gallionella sp. | species | 2 | 0 |
| singapore | | gallionellaceae bacterium uba1605 | species | 1 | 0 |
| singapore | | gallionellaceae bacterium uba5126 | species | 1 | 0 |
| south korea | | uncultured sideroxydans sp. | species | 1 | 0 |
| spain | | uncultured gallionella sp. | species | 1 | 0 |
| sweden | | uncultured gallionellaceae bacterium | species | 2 | 0 |
| united kingdom | wales | gallionella | genus | 0 | 2 |
| united kingdom | wales | uncultured gallionella sp. | species | 1 | 0 |
| united states | | uncultured gallionellaceae bacterium | species | 3 | 0 |
| united states | alabama | gallionella | genus | 0 | 1 |
| united states | colorado | gallionella | genus | 0 | 1 |
| united states | colorado | sideroxydans sp. gwf2_59_14 | species | 16 | 0 |
| united states | colorado | sideroxydans sp. rifoxyb12_full_59_6 | species | 555 | 0 |
| united states | colorado | sideroxydans sp. rifoxyd2_full_59_7 | species | 531 | 0 |
| united states | kentucky | gallionella sp. | species | 2 | 0 |
| united states | massachusetts | uncultured gallionella sp. | species | 3 | 0 |
| united states | massachusetts | uncultured gallionellaceae bacterium | species | 25 | 0 |
| united states | massachusetts | uncultured sideroxydans sp. | species | 12 | 0 |
| united states | north carolina | uncultured gallionellaceae bacterium | species | 1 | 0 |
| united states | tennessee | gallionella sp. | species | 463 | 0 |
| united states | utah | gallionella sp. | species | 4 | 0 |
| united states | utah | gallionellaceae bacterium cg_4_10_14_3_um_filter_60_1069 | species | 198 | 0 |
| united states | utah | gallionellaceae bacterium cg_4_9_14_0_8_um_filter_60_335 | species | 111 | 0 |
| united states | utah | gallionellaceae bacterium cg02_land_8_20_14_3_00_60_115 | species | 129 | 0 |
| united states | utah | gallionellaceae bacterium cg1_02_56_997 | species | 328 | 0 |
| united states | utah | gallionellaceae bacterium cg1_02_60_325 | species | 140 | 0 |
| united states | utah | gallionellaceae bacterium cg1_02_60_948 | species | 92 | 0 |
| united states | utah | gallionellaceae bacterium cg11_big_fil_rev_8_21_14_0_20_60_62 | species | 166 | 0 |
| vietnam | | uncultured gallionella sp. | species | 1 | 0 |