| Official Name: | Shelltown, Maryland |
| Settlement Type: | Unincorporated community |
| Pushpin Map: | Maryland |
| Pushpin Label: | Shelltown |
| Subdivision Type: | Country |
| Subdivision Type1: | State |
| Subdivision Type2: | County |
| Subdivision Name2: | Somerset |
| Timezone: | Eastern (EST) |
| Utc Offset: | -5 |
| Timezone Dst: | EDT |
| Utc Offset Dst: | -4 |
| Elevation Ft: | 3 |
| Coordinates: | 37.9797°N -75.64°W |
| Postal Code Type: | ZIP code |
| Postal Code: | 21838 |
| Area Code: | 410, 443, and 667 |
| Blank Name: | GNIS feature ID |
| Blank Info: | 591269 |
Shelltown is an unincorporated community in Somerset County, Maryland, United States. It is near the mouth of the Pocomoke River and takes its name from the abundant number of oysters, crabs, and other assorted crustaceans in the area.
Shelltown is accessible from Shelltown Road, which connects to Old Rehobeth Road and Coventry Parish Road, both leading to Maryland Route 667.
Reward was listed on the National Register of Historic Places in 1974.