Fenwick Island
- Country: United States
- State: Delaware
- Population: 426 (2016)
- Latitude: 38° 27.7' N (38.46233°)
- Longitude: 75° 3.1' W (-75.05129°)
- Elevation: 3 m/9 ft. above sea level
- Time zone: America/New_York (UTC -05:00); DST observed (UTC -04:00)
- Alternate names: Assawoman Beach, Fenwicks Island