I-M
| Idalius | aɪˈdeɪliəs | ||
| Ilissus | aɪˈlɪsəs | ||
| Indus | ˈɪndəs | N to S: connects Niliacus Lacus to Margaritifer Sinus | From the Indus, a river of India |
| Iris | ˈaɪrɨs | N to S: connects Phoenicis Lacus to Ceraunius canal | Named for the goddess of the rainbow Iris |
| Isis | ˈaɪsɨs | From the Egyptian goddess Isis | |
| Issedon | ˈɪsɨdɒn | ||
| Jamuna | ˈdʒæmjuːnə | N to S; connects Niliacus Lacus to Aurorae Sinus | From the Yamuna or Jumna, a river of India |
| Jaxartes | dʒækˈsɑrtiːz | From an old name for the Syr Darya, a river of Transoxiana | |
| Jordanis | dʒɒrˈdeɪnɨs | From the river Jordan in the Holy Land | |
| Kison | ˈkaɪsɒn | ||
| Labotas | |||
| Laestrygon | lɛsˈtraɪɡɒn | N to S: connects Trivium Charontis to Mare Cimmerium | |
| Leontes | liːˈɒntiːz | ||
| Lethes | ˈliːθiːz | N to S: connects Hephaestus canal to Syrtis Minor | From Lethe, a mythical river of Hades |
| Liris | ˈlaɪrɨs | ||
| Maeander | miːˈændər | ||
| Magon | ˈmeɪɡɒn | ||
| Malva | ˈmælvə | ||
| Margus | ˈmɑrɡəs | ||
| Medus | ˈmiːdəs | ||
| Medusa | miːˈdjuːsə | From the mythical monster Medusa | |
| Mogrus | ˈmoʊɡrəs |
Read more about this topic: List Of Martian Canals