| Official Name: | Ona, Florida |
| Settlement Type: | Census-designated place |
| Pushpin Map: | Florida#USA |
| Pushpin Label: | Ona |
| Subdivision Type: | Country |
| Subdivision Name: | United States |
| Subdivision Type1: | State |
| Subdivision Name1: | Florida |
| Subdivision Type2: | County |
| Subdivision Name2: | Hardee |
| Unit Pref: | Imperial |
| Area Footnotes: | [1] |
| Area Total Km2: | 69.20 |
| Area Land Km2: | 69.20 |
| Area Water Km2: | 0.00 |
| Area Total Sq Mi: | 26.72 |
| Area Land Sq Mi: | 26.72 |
| Area Water Sq Mi: | 0.00 |
| Population As Of: | 2020 |
| Population Total: | 199 |
| Population Density Km2: | 2.88 |
| Population Density Sq Mi: | 7.45 |
| Timezone: | Eastern (EST) |
| Utc Offset: | -5 |
| Timezone Dst: | EDT |
| Utc Offset Dst: | -4 |
| Elevation Ft: | 89 |
| Coordinates: | 27.4819°N -81.9189°W |
| Postal Code Type: | ZIP code |
| Postal Code: | 33865 |
| Area Code: | 863 |
| Blank Name: | GNIS feature ID |
| Blank Info: | 288156 |
Ona is an unincorporated community and census-designated place in Hardee County, Florida, United States. Its population was 199 as of the 2020 census. Ona has a post office with ZIP code 33865, which opened on October 11, 1897.[2] [3] State Road 64 and a CSX Transportation line pass through the community.