- ''Ilion'' or ''Ilium'', alternative names for the legendary city of Troy
- Ilio, Greece , a suburb of Athens, Greece, also known as Nea Liossia
- Ilion, New York , a village in Herkimer County, New York
- Ilium (band) , a melodic power metal band from Newcastle, Australia
- Ilium (bone) or ''ilion'', a bone in the pelvis
- Ilium (Kurt Vonnegut) , a fictional town in upper New York state, used as a setting for many of Kurt Vonnegut's novels
- '' Ilium (novel) '', a 2003 novel by Dan Simmons
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