| Official Name: | Cearfoss, Maryland |
| Settlement Type: | Census-designated place |
| Pushpin Map: | Maryland#USA |
| Pushpin Label: | Cearfoss |
| Subdivision Type: | Country |
| Subdivision Name: | United States |
| Subdivision Type1: | State |
| Subdivision Name1: | Maryland |
| Subdivision Type2: | County |
| Subdivision Name2: | Washington |
| Unit Pref: | Imperial |
| Area Footnotes: | [1] |
| Area Total Km2: | 0.52 |
| Area Land Km2: | 0.52 |
| Area Water Km2: | 0.00 |
| Area Total Sq Mi: | 0.20 |
| Area Land Sq Mi: | 0.20 |
| Area Water Sq Mi: | 0.00 |
| Population As Of: | 2020 |
| Population Total: | 176 |
| Population Density Km2: | 337.88 |
| Population Density Sq Mi: | 875.62 |
| Timezone: | Eastern (EST) |
| Utc Offset: | -5 |
| Timezone Dst: | EDT |
| Utc Offset Dst: | -4 |
| Elevation Ft: | 499 |
| Coordinates: | 39.7008°N -77.7756°W |
| Postal Code Type: | ZIP code |
| Postal Code: | 21740[2] |
| Area Code: | 301, 240 |
| Blank Name: | FIPS code |
| Blank Info: | 24-14300 |
| Blank1 Name: | GNIS feature ID |
| Blank1 Info: | 2583595 |
Cearfoss is an unincorporated community and census-designated place in northwestern Washington County, Maryland, United States. Its population was 178 as of the 2010 census.[3] Cearfoss is located northwest of Hagerstown and Maugansville, near the Pennsylvania border. Many highways intersect in Cearfoss in a roundabout, including Maryland routes 58, 63 and 494. Cearfoss is officially included in the Hagerstown Metropolitan Area (Hagerstown-Martinsburg, MD-WV Metropolitan Statistical Area).
According to the U.S. Census Bureau, the community has an area of, all land.