| antarctica | | peptostreptococcus sp. | species | 1 | 0 |
| australia | | peptostreptococcus anaerobius | species | 1 | 0 |
| brazil | ceara | peptostreptococcus | genus | 0 | 1 |
| brazil | minas gerais | peptostreptococcus | genus | 0 | 1 |
| canada | ontario | uncultured peptostreptococcus sp. | species | 2 | 0 |
| chile | santiago metropolitan region | peptostreptococcus | genus | 0 | 1 |
| china | | peptostreptococcus canis | species | 1 | 0 |
| china | | peptostreptococcus sp. 7(1-1)(5.22) | species | 1 | 0 |
| china | | uncultured peptostreptococcus sp. | species | 4 | 0 |
| china | beijing | peptostreptococcus | genus | 0 | 1 |
| dominican republic | distrito nacional | peptostreptococcus | genus | 0 | 1 |
| dominican republic | santo domingo province | peptostreptococcus | genus | 0 | 1 |
| france | ile-de-france region | peptostreptococcus | genus | 0 | 1 |
| french polynesia | | peptostreptococcus | genus | 0 | 1 |
| germany | | uncultured peptostreptococcus sp. | species | 1 | 0 |
| greece | attica region | peptostreptococcus | genus | 0 | 1 |
| guatemala | guatemala department | peptostreptococcus | genus | 0 | 1 |
| hong kong | | peptostreptococcus | genus | 0 | 2 |
| india | uttar pradesh | peptostreptococcus | genus | 0 | 1 |
| indonesia | east java province | peptostreptococcus | genus | 0 | 1 |
| iran | tehran province | uncultured peptostreptococcus sp. | species | 1 | 0 |
| italy | sicily autonomous region | peptostreptococcus | genus | 0 | 1 |
| japan | gifu prefecture | peptostreptococcus | genus | 0 | 1 |
| netherlands | north holland province | peptostreptococcus | genus | 0 | 1 |
| new zealand | | peptostreptococcus sp. c27 | species | 1 | 0 |
| new zealand | auckland | peptostreptococcus | genus | 0 | 1 |
| niger | | uncultured peptostreptococcus sp. | species | 3 | 0 |
| nigeria | | uncultured peptostreptococcus sp. | species | 4 | 0 |
| nigeria | lagos | peptostreptococcus | genus | 0 | 1 |
| nigeria | sokoto | peptostreptococcus | genus | 0 | 1 |
| romania | | uncultured peptostreptococcus sp. | species | 1 | 0 |
| saudi arabia | | peptostreptococcus stomatis | species | 1 | 0 |
| singapore | | peptostreptococcus | genus | 0 | 1 |
| slovenia | | peptostreptococcus anaerobius | species | 1 | 0 |
| south africa | free state province | peptostreptococcus | genus | 0 | 1 |
| south africa | free state province | peptostreptococcus anaerobius | species | 0 | 1 |
| south africa | the western cape province | peptostreptococcus | genus | 0 | 1 |
| south africa | the western cape province | peptostreptococcus anaerobius | species | 0 | 1 |
| south korea | | peptostreptococcus anaerobius | species | 1 | 0 |
| south korea | | peptostreptococcus stomatis | species | 6 | 0 |
| south korea | | uncultured peptostreptococcus sp. | species | 1 | 0 |
| sri lanka | | peptostreptococcus anaerobius | species | 1 | 0 |
| sri lanka | | uncultured peptostreptococcus sp. | species | 2 | 0 |
| taiwan | | peptostreptococcus | genus | 0 | 3 |
| turkey | konya province | peptostreptococcus | genus | 0 | 1 |
| united kingdom | | peptostreptococcus sp. | species | 3 | 0 |
| united kingdom | | peptostreptococcus sp. feline oral taxon 053 | species | 1 | 0 |
| united kingdom | | uncultured peptostreptococcus sp. | species | 1 | 0 |
| united kingdom | england | peptostreptococcus | genus | 0 | 3 |
| united kingdom | scotland | peptostreptococcus | genus | 0 | 1 |
| united kingdom | wales | peptostreptococcus | genus | 0 | 2 |
| united states | | peptostreptococcus anaerobius | species | 48 | 0 |
| united states | | peptostreptococcus canis | species | 42 | 0 |
| united states | | uncultured peptostreptococcus sp. | species | 1 | 0 |
| united states | hawaii | peptostreptococcus | genus | 0 | 1 |
| united states | illinois | peptostreptococcus anaerobius | species | 212 | 0 |
| united states | maryland | peptostreptococcus | genus | 0 | 1 |
| united states | massachusetts | peptostreptococcus | genus | 0 | 1 |
| united states | michigan | peptostreptococcus | genus | 0 | 1 |
| united states | minnesota | peptostreptococcus | genus | 0 | 1 |
| united states | new york | peptostreptococcus | genus | 0 | 1 |
| united states | north carolina | peptostreptococcus | genus | 0 | 1 |
| united states | oregon | peptostreptococcus | genus | 0 | 1 |
| united states | pennsylvania | peptostreptococcus sp. | species | 1 | 0 |