| Official Name: | Williamsport, Ohio |
| Pushpin Map: | Ohio#USA |
| Pushpin Relief: | yes |
| Pushpin Label: | Williamsport |
| Subdivision Type: | Country |
| Subdivision Name: | United States |
| Subdivision Type1: | State |
| Subdivision Name1: | Ohio |
| Subdivision Type2: | County |
| Subdivision Name2: | Columbiana |
| Subdivision Type3: | Township |
| Subdivision Name3: | Madison |
| Unit Pref: | Imperial |
| Timezone: | Eastern (EST) |
| Utc Offset: | -5 |
| Timezone Dst: | EDT |
| Utc Offset Dst: | -4 |
| Elevation Ft: | 843 |
| Coordinates: | 40.7239°N -80.6358°W |
| Postal Code Type: | ZIP code |
| Postal Code: | 44432 |
| Area Code: | 330, 234 |
| Blank Name: | FIPS code |
| Blank1 Name: | GNIS Feature ID |
| Blank1 Info: | 1061785 |
Williamsport is an unincorporated community in northwestern Madison Township, Columbiana County, Ohio, United States.
Williamsport was platted in 1835 by William Crawford, and named for him.[1] An old variant name was Park. A post office called Park was established in 1890, and remained in operation until 1902.[2]
Williamsport is home to the Beaver Local School District. The confluence that forms the Little Beaver Creek is in the center of the community.