| Official Name: | Perth, Delaware |
| Pushpin Map: | Delaware#USA |
| Pushpin Label: | Perth |
| Pushpin Label Position: | left |
| Subdivision Type: | Country |
| Subdivision Name: | United States |
| Subdivision Type1: | State |
| Subdivision Name1: | Delaware |
| Subdivision Type2: | County |
| Subdivision Name2: | New Castle |
| Timezone: | Eastern (EST) |
| Utc Offset: | -5 |
| Timezone Dst: | EDT |
| Utc Offset Dst: | -4 |
| Elevation Ft: | 361 |
| Coordinates: | 39.8036°N -75.5239°W |
| Area Code: | 302 |
| Blank Name: | GNIS feature ID |
| Blank Info: | 215860 |
Perth is an unincorporated community in New Castle County, Delaware, United States. Perth is located northwest of Delaware Route 261 between Shipley and Silverside Roads, to the northeast of Wilmington. It is not to be confused with Perth, Western Australia or Perth, Scotland.