Hildenbrandia rubra
- kingdom: Plantae
- phylum: Rhodophyta
- class: Florideophyceae
- order: Hildenbrandiales
- family: Hildenbrandiaceae
- genus: Hildenbrandia
- species: Hildenbrandia rubra
Yarmouth
Nova Scotia
Canada- France
Nortorf
Schleswig-Holstein
Germany
Freuchie
Saint Andrews
Scotland
Pontycymer
Wales
United Kingdom
Bolinas
Montara
Moss Beach
Santa Cruz
California
Bridgeport
Connecticut
Rockland
Maine
East Falmouth
Marblehead
Nahant
Massachusetts
Cold Spring Harbor
Laurel Hollow
Pelham Manor
New York
United States
Saint-Caradec