Port Heiden
- Country: United States
- State: Alaska
- Population: 97 (2016)
- Latitude: 56° 56' N (56.93256°)
- Longitude: 158° 37.5' W (-158.62497°)
- Elevation: 25 m/83 ft. above sea level
- Time zone: America/Anchorage (UTC -09:00); DST observed (UTC -08:00)
- Alternate names: Mashik, Masrriq, Meshik, Mishik