| Official Name: | Millport, Ohio |
| Settlement Type: | Unincorporated community |
| Pushpin Map: | Ohio#USA |
| Pushpin Relief: | yes |
| Pushpin Label: | Millport |
| Subdivision Type: | Country |
| Subdivision Name: | United States |
| Subdivision Type1: | State |
| Subdivision Name1: | Ohio |
| Subdivision Type2: | County |
| Subdivision Name2: | Columbiana |
| Subdivision Type3: | Township |
| Subdivision Name3: | Franklin |
| Unit Pref: | Imperial |
| Timezone: | Eastern (EST) |
| Utc Offset: | -5 |
| Timezone Dst: | EDT |
| Utc Offset Dst: | -4 |
| Elevation Ft: | 1089 |
| Coordinates: | 40.7°N -80.8864°W |
| Postal Code Type: | ZIP code |
| Postal Code: | 44427 |
| Area Codes: | 330, 234 |
| Blank Name: | FIPS code |
| Blank1 Name: | GNIS feature ID |
| Blank1 Info: | 1061525 |
Millport is an unincorporated community in Franklin Township, Columbiana County, Ohio, United States. It lies just north of the village of Summitville in the southwestern part of the county, at the intersection of Ohio State Route 644 and 518.
Millport was platted in 1853, and named for the sawmill and gristmill at the town site.[1] A post office called Millport was established in 1861, and remained in operation until 1929.[2]