Gigartina exasperata
- kingdom: Plantae
- phylum: Rhodophyta
- class: Florideophyceae
- order: Gigartinales
- family: Gigartinaceae
- genus: Gigartina
- species: Gigartina exasperata
- Lions Bay
- North Saanich
- Victoria
British Columbia
Canada- Bunker Hill
- Coos Bay
Oregon- Rocky Point
- Tracyton
Washington
United States