| Scientific Name | Author | English Name |
|---|---|---|
| Protodrilus symbioticus | unspecified | |
| Protodrilus similis | Jouin, 1970 | |
| Protodrilus spongioides | Pierantoni, 1903 | |
| Protodrilus rubropharyngeus | Jagersten, 1940 | |
| Protodrilus purpureus | (Schneider, 1868) | |
| Protodrilus oculifer | Pierantoni, 1908 | |
| Protodrilus mirabilis | Czerniavsky, 1881 | |
| Protodrilus minutus | Kirsteuer, 1966 | |
| Protodrilus leuckarti | Hatschek, 1882 | |
| Protodrilus infundibuliformis | Schmidt & Westheide, 1977 | |
| Protodrilus hypoleucus | Armenante, 1903 | |
| Protodrilus indicus | Aiyar & Alikuhni, 1944 | |
| Protodrilus helgolandicus | Von Nordheim, 1983 | |
| Protodrilus hatscheki | Pierantoni, 1908 | |
| Protodrilus flavocapitatus | (Uljanin, 1877) | |
| Protodrilus gracilis | Von Nordheim, 1989 | |
| Protodrilus corderoi | Marcus, 1948 | |
| Protodrilus flabelliger | unspecified | |
| Protodrilus ciliatus | Jagersten, 1952 | |
| Protodrilus affinis | Jouin, 1968 | |
| Protodrilus brevis | Jouin, 1970 | |
| Protodriloides symbioticus | (Giard, 1904) | |
| Protodrilus adhaerens | Jagersten, 1952 | |
| Protodriloides chaetifer | (Remane, 1926) |