| Illiana | |
| Settlement Type: | Unincorporated community |
| Mapsize: | 150px |
| Pushpin Map: | USA Illinois Vermilion County |
| Pushpin Map Caption: | Illiana's location in Vermilion County |
| Subdivision Type: | Country |
| Subdivision Type1: | State |
| Subdivision Type2: | County |
| Subdivision Name2: | Vermilion County |
| Subdivision Type3: | Township |
| Subdivision Name3: | Newell Township |
| Elevation Ft: | 722 |
| Coordinates: | 40.1964°N -87.5319°W |
| Postal Code Type: | ZIP code |
| Postal Code: | 61814 |
| Area Code: | 217 |
| Blank Name: | GNIS feature ID |
| Blank Info: | 0410753 |
| Unit Pref: | imperial |
Illiana is an unincorporated community in Newell Township, Vermilion County, Illinois, United States. In this area, State Line Road runs along the border between Illinois and Indiana; Illiana is just across the road from the town of State Line City in Warren County in Indiana. The name is a portmanteau of Illinois and Indiana.