Marydel is a town in Caroline County, Maryland, United States. The population was 147 at the 2000 census. It is named after its location, being partially located in Maryland and partially in Delaware.
Marydel is located at 39°6.8′N 75°44.8′W / 39.1133°N 75.7467°W / 39.1133; -75.7467 (39.1130, -75.7468).
According to the United States Census Bureau, the town has a total area of 0.1 square miles (0.2 km²), all of it land.