| Feature Name | Latitude | Longitude | Diameter (km) | Origin |
|---|
| Argos Planum | -47.98 | 42.19 | 195.45 | Where Io was captured by Zeus. |
| Danube Planum | -22.73 | 102.56 | 244.22 | Where Io passed by in her wanderings. |
| Dodona Planum | -58.8 | 12.49 | 522.83 | Greek; where Io went after the death of Argus. |
| Ethiopia Planum | -45.3 | -24.59 | 331.32 | Where Io passed by in her wanderings. |
| Hybristes Planum | -54.41 | -18.45 | 195.1 | Where Io passed by in her wanderings. |
| Iopolis Planum | -35.31 | 27.28 | 240.16 | Town where Io was worshipped as moon goddess (present-day Antioch). |
| Lyrcea Planum | -41.92 | 91.17 | 423.71 | Plain where Io was born. |
| Nemea Planum | -72.82 | 92.28 | 835.05 | Greek; where Io was turned into a cow by Zeus and given to Hera. |
