| china | | uncultured undibacterium sp. | species | 5 | 0 |
| china | | undibacterium aquatile | species | 20 | 0 |
| china | | undibacterium oligocarboniphilum | species | 39 | 0 |
| china | | undibacterium sp. | species | 20 | 0 |
| china | hunan | uncultured undibacterium sp. | species | 1 | 0 |
| china | xinjiang | undibacterium sp. b4 | species | 1 | 0 |
| china | xinjiang | undibacterium sp. c11 | species | 1 | 0 |
| colombia | | uncultured undibacterium sp. | species | 3 | 0 |
| finland | | uncultured undibacterium sp. | species | 1 | 0 |
| greenland | | undibacterium sp. | species | 1 | 0 |
| india | | undibacterium oligocarboniphilum | species | 1 | 0 |
| india | | undibacterium sp. | species | 2 | 0 |
| indonesia | | uncultured undibacterium sp. | species | 1 | 0 |
| japan | | uncultured undibacterium sp. | species | 1 | 0 |
| japan | hokkaido prefecture | uncultured undibacterium sp. | species | 5 | 0 |
| japan | hokkaido prefecture | undibacterium sp. strd311 | species | 1 | 0 |
| japan | hokkaido prefecture | undibacterium sp. sttd332 | species | 1 | 0 |
| japan | hokkaido prefecture | undibacterium sp. sttd405 | species | 1 | 0 |
| japan | hokkaido prefecture | undibacterium sp. sttd408 | species | 1 | 0 |
| japan | hokkaido prefecture | undibacterium sp. sttd415 | species | 1 | 0 |
| japan | hokkaido prefecture | undibacterium sp. sttd416 | species | 1 | 0 |
| japan | hokkaido prefecture | undibacterium sp. sttd434 | species | 1 | 0 |
| japan | hokkaido prefecture | undibacterium sp. sttd455 | species | 1 | 0 |
| japan | hokkaido prefecture | undibacterium sp. sttd459 | species | 1 | 0 |
| japan | hokkaido prefecture | undibacterium sp. sttd679 | species | 1 | 0 |
| japan | hokkaido prefecture | undibacterium sp. sttd778 | species | 1 | 0 |
| japan | iwate prefecture | undibacterium pigrum | species | 1 | 0 |
| japan | yamanashi prefecture | undibacterium sp. | species | 2 | 0 |
| mexico | | uncultured undibacterium sp. | species | 1 | 0 |
| nigeria | | uncultured undibacterium sp. | species | 1 | 0 |
| portugal | | undibacterium sp. 7a-190 | species | 1 | 0 |
| portugal | | undibacterium sp. 7a-208 | species | 1 | 0 |
| portugal | | undibacterium sp. 7a-373 | species | 1 | 0 |
| portugal | | undibacterium sp. 7a-629 | species | 1 | 0 |
| portugal | | undibacterium sp. 7a-630 | species | 1 | 0 |
| portugal | | undibacterium sp. 7b-410 | species | 1 | 0 |
| portugal | | undibacterium sp. 7b-638 | species | 1 | 0 |
| portugal | | undibacterium sp. 7b-640 | species | 1 | 0 |
| portugal | | undibacterium sp. a1-30 | species | 1 | 0 |
| portugal | | undibacterium sp. a1-36 | species | 1 | 0 |
| portugal | | undibacterium sp. a1-588 | species | 1 | 0 |
| portugal | | undibacterium sp. b6.09-36 | species | 1 | 0 |
| portugal | | undibacterium sp. w1.09-20 | species | 1 | 0 |
| russia | | uncultured undibacterium sp. | species | 3 | 0 |
| south korea | | undibacterium aquatile | species | 2 | 0 |
| south korea | | undibacterium parvum | species | 1 | 0 |
| south korea | | undibacterium pigrum | species | 1 | 0 |
| south korea | | undibacterium sp. | species | 2 | 0 |
| south korea | | undibacterium sp. cmfn9 | species | 1 | 0 |
| south korea | | undibacterium sp. hme6890 | species | 1 | 0 |
| south korea | | undibacterium sp. mic2007 | species | 1 | 0 |
| spain | | uncultured undibacterium sp. | species | 1 | 0 |
| taiwan | | undibacterium sp. | species | 1 | 0 |
| united states | | undibacterium sp. | species | 2 | 0 |
| united states | alaska | undibacterium sp. msc-14-4ch2-11 | species | 1 | 0 |
| united states | massachusetts | undibacterium sp. | species | 1459 | 0 |