| AHTI m Finnish, Finnish Mythology |
| AMELIA f English, Spanish, Italian, Polish, Dutch, German, Ancient Germanic |
| ANDREW m English, Biblical |
| APHRODITE f Greek Mythology |
| CASPIAN m Literature |
| CLÍODHNA f Irish, Irish Mythology |
| DORIS f English, German, Croatian, Ancient Greek, Greek Mythology |
| DYLAN m Welsh, English, Welsh Mythology |
| EGLĖ f Lithuanian |
| GLAUCUS m Greek Mythology (Latinized) |
| HADRIAN m History |
| HELLE (2) f Greek Mythology |
| IANTHE f Greek Mythology |
| IONE f Greek Mythology, English |
| JULES (1) m French |
| KLYTIË f Greek Mythology |
| LIR m Irish Mythology |
| LLYR m Welsh Mythology |
| MAGDALENE f German, Danish, English, Biblical, Biblical Greek, Biblical Latin |
| NEMO m Literature |
| NEPTUNE m Roman Mythology (Anglicized) |
| NEREIDA f Spanish |
| NEREUS m Greek Mythology, Ancient Greek, Biblical, Biblical Latin, Biblical Greek |
| NERISSA f Literature |
| NIAMH f Irish, Irish Mythology |
| OCEAN m & f English (Rare) |
| OCÉANE f French |
| OCEANUS m Greek Mythology (Latinized) |
| ODESSA f Various |
| POSEIDON m Greek Mythology |
| PROTEUS m Greek Mythology |
| RAMESES m Ancient Egyptian (Hellenized) |
| SEDNA f Mythology |
| TANGAROA m Pacific/Polynesian Mythology |
| TETHYS f Greek Mythology |
| TIAMAT f Near Eastern Mythology |
| VELLAMO f Finnish Mythology |
| YAM m Near Eastern Mythology |
