Chaetomorpha billardieri
- kingdom: Plantae
- phylum: Chlorophyta
- class: Ulvophyceae
- order: Cladophorales
- family: Cladophoraceae
- genus: Chaetomorpha
- species: Chaetomorpha billardieri
George Town
Tasmania
AustraliaPointe-à-Pitre
Guadeloupe
Guadeloupe