| Official Name: | Nyona Lake, Indiana |
| Settlement Type: | Census-designated place |
| Pushpin Map: | Indiana#USA |
| Pushpin Label: | Nyona Lake |
| Subdivision Type: | Country |
| Subdivision Name: | United States |
| Subdivision Type1: | State |
| Subdivision Name1: | Indiana |
| Subdivision Type2: | County |
| Subdivision Name2: | Fulton |
| Subdivision Type3: | Township |
| Subdivision Name3: | Liberty |
| Area Footnotes: | [1] |
| Unit Pref: | Imperial |
| Area Total Sq Mi: | 0.54 |
| Area Land Sq Mi: | 0.38 |
| Area Water Sq Mi: | 0.16 |
| Population As Of: | 2020 |
| Timezone: | Eastern (EST) |
| Utc Offset: | -5 |
| Timezone Dst: | EDT |
| Utc Offset Dst: | -4 |
| Elevation Ft: | 794 |
| Coordinates: | 40.9639°N -86.1858°W |
| Postal Code Type: | ZIP code |
| Postal Code: | 46951 (Macy) |
| Area Code: | 574 |
| Blank Name: | FIPS code |
| Blank Info: | 18-55512 |
| Blank1 Name: | GNIS feature ID |
| Blank1 Info: | 2830383 |
Nyona Lake is an unincorporated community and census-designated place (CDP) in Fulton County, Indiana, United States.
The community is in southeastern Fulton County, surrounding the natural water body of Nyona Lake. It is 9miles south of Rochester, the county seat.
According to the United States Census Bureau, the CDP has a total area of 0.54sqmi, of which 0.38sqmi are land and 0.16sqmi, or 29.72%, are water.[1] The lake drains at its south end into Mud Creek, which flows northwest to the Tippecanoe River, which continues west and then south to the Wabash River.