n = 13
| Scientific Name | Author | Valid Name | Family | English Name |
|---|---|---|---|---|
| Lethenteron alaskense | Vladykov & Kott, 1978 | Lethenteron alaskense | Petromyzontidae | Alaskan brook lamprey |
| Lethenteron appendix | (DeKay, 1842) | Lethenteron appendix | Petromyzontidae | American brook lamprey |
| Lethenteron camshchaticum | (Tilesius, 1811) | Lethenteron camtschaticum | Petromyzontidae | Arctic lamprey |
| Lethenteron camtschaticum | (Tilesius, 1811) | Lethenteron camtschaticum | Petromyzontidae | Arctic lamprey |
| Lethenteron japonicum | (Martens, 1868) | Lethenteron camtschaticum | Petromyzontidae | Arctic lamprey |
| Lethenteron japonicum kessleri | Anikin, 1905 | Lethenteron kessleri | Petromyzontidae | Siberian brook lamprey |
| Lethenteron kessleri | (Anikin, 1905) | Lethenteron kessleri | Petromyzontidae | Siberian brook lamprey |
| Lethenteron matsubarai | Vladykov & Kott, 1978 | Lethenteron mitsukurii | Petromyzontidae | |
| Lethenteron meridionale | Vladykov, Kott & Pharand-Coad, 1975 | Lampetra aepyptera | Petromyzontidae | Least brook lamprey |
| Lethenteron mitsukurii | (Hatta, 1901) | Lethenteron mitsukurii | Petromyzontidae | |
| Lethenteron ninae | Naseka, Tuniyev & Renaud, 2009 | Lethenteron ninae | Petromyzontidae | Western Transcaucasian lamprey |
| Lethenteron reissneri | (Dybowski, 1869) | Lethenteron reissneri | Petromyzontidae | Far Eastern brook lamprey |
| Lethenteron zanandreai | (Vladykov, 1955) | Lampetra zanandreai | Petromyzontidae | Po brook lamprey |