| Official Name: | Firebrick, Ohio |
| Settlement Type: | Unincorporated community |
| Mapsize: | 250px |
| Pushpin Map: | Ohio#USA |
| Pushpin Label: | Firebrick |
| Pushpin Label Position: | top |
| Subdivision Type: | Country |
| Subdivision Name: | United States |
| Subdivision Type1: | State |
| Subdivision Name1: | Ohio |
| Subdivision Type2: | Counties |
| Subdivision Name2: | Lawrence |
| Subdivision Type3: | Township |
| Subdivision Name3: | Washington |
| Unit Pref: | Imperial |
| Timezone: | Eastern (EST) |
| Utc Offset: | -5 |
| Timezone Dst: | EDT |
| Utc Offset Dst: | -4 |
| Elevation Ft: | 669 |
| Coordinates: | 38.8392°N -82.6456°W |
| Postal Code Type: | ZIP code |
| Postal Code: | 45656 |
| Area Code: | 740 |
| Blank Name: | GNIS feature ID |
| Blank Info: | 1075850 |
Firebrick (previously known as Spencer) is an unincorporated community in Washington Township, Lawrence County, Ohio, United States. It is located between Oak Hill and South Webster near the intersection of Ohio State Route 140 and Blackfork-Firebrick Road.[1]
The Firebrick Post Office was established in the Donley Store on April 14, 1911. Wm. S. Hamilton was the first Postmaster, followed by Chester C. Donley.[2] It then became a Rural Branch of the Oak Hill Post Office on September 1, 1959, and was discontinued entirely between 1973 and 1974. Mail service is now sent through the Oak Hill branch.[3]