| Species | Protection in Poland | Status on Polish Red List | Status in Flora-Fauna-Habitat Directive |
| Gatunek | Ochrona w Polsce | Status na Polskiej Czerwonej Liście | Status w Dyrektywie Habitatowej |
| Batracobdella paludosa | . | V | . |
| Boreobdella verrucata | . | R | . |
| Dina apathyi | . | R | . |
| Dina lineata | . | V | . |
| Erpobdella monostriata | . | . | . |
| Erpobdella nigricollis | . | . | . |
| Erpobdella octoculata | . | . | . |
| Erpobdella testacea | . | . | . |
| Glossiphonia complanata | . | . | . |
| Glossiphonia heteroclita | . | . | . |
| Haementeria costata | . | . | . |
| Haemopis sanguisuga | . | . | . |
| Helobdella stagnalis | . | . | . |
| Hemiclepsis marginata | . | . | . |
| Hirudo medicinalis | OS | V | App 5 |
| Piscicola geometra | . | . | . |
| Theromyzon maculosum | . | R | . |
| Theromyzon tessulatum | . | . | . |