British Phycological Society (BSP) - Working to advance education by the encouragement and pursuit of all aspects of the study of algae.
International Fossil Algae Association - Nonprofit organisation interested in promoting the study of fossil algae: taxonomy, morphology, biology, biostratigraphy, and paleo-ecology.
Phycological Society of America - Scientific organisation that promotes phycology, the study of algae, and fosters phycological research and education.