| Official Name: | Bladensburg, Ohio |
| Settlement Type: | Census-designated place |
| Pushpin Map: | Ohio#USA |
| Pushpin Label: | Bladensburg |
| Pushpin Label Position: | bottom |
| Subdivision Type: | Country |
| Subdivision Name: | United States |
| Subdivision Type1: | State |
| Subdivision Name1: | Ohio |
| Subdivision Type2: | County |
| Subdivision Name2: | Knox |
| Subdivision Type3: | Townships |
| Subdivision Name3: | Clay, Jackson |
| Unit Pref: | Imperial |
| Area Footnotes: | [1] |
| Area Total Km2: | 0.86 |
| Area Land Km2: | 0.86 |
| Area Water Km2: | 0.00 |
| Area Total Sq Mi: | 0.33 |
| Area Land Sq Mi: | 0.33 |
| Area Water Sq Mi: | 0.00 |
| Population As Of: | 2020 |
| Population Total: | 180 |
| Population Density Km2: | 210.51 |
| Population Density Sq Mi: | 545.45 |
| Timezone: | Eastern (EST) |
| Utc Offset: | -5 |
| Timezone Dst: | EDT |
| Utc Offset Dst: | -4 |
| Elevation Ft: | 965 |
| Coordinates: | 40.2847°N -82.2839°W |
| Postal Code Type: | ZIP code |
| Postal Code: | 43005 |
| Area Code: | 740 |
| Blank Name: | FIPS code |
| Blank Info: | 39-06740[2] |
| Blank1 Name: | GNIS feature ID |
| Blank1 Info: | 2628866 |
Bladensburg is a census-designated place (CDP) on the border between Clay and Jackson townships, Knox County, Ohio, United States.[3] As of the 2020 census the CDP had a population of 180. It has a post office with the ZIP code 43005.[4] It lies along State Route 541 east of Martinsburg.
Bladensburg was originally spelled "Bladensburgh", and under the latter name was laid out in 1833.[5] A post office has been in operation at Bladensburg(h) since 1834.[6]
Bladensburg is the former home of East Knox Elementary School.[7]
Bladensburg is also home to the Bladensburg Volunteer Fire Department,[8] with 42 volunteer firefighters. It is the main station for the Bladensburg Joint Fire District.[9]
Bladensburg is the home of a popular annual Christmas parade, which has been held since 1971.[10]