Cynthia Anne Gust Ahearn was an American echinodermologist and museum specialist at the Smithsonian Institution. She was responsible for the curation of the Smithsonian's extensive collection of echinoderms. An impactful individual in the field of echinodermology, Ahearn identified nearly 300,000 echinoderm specimen lots and had a nearly complete cataloged collection for the National Museum of Natural History Echinodermata. Ahearn was also responsible for several newsletters during her career, as well as the Discovery Cart, a segment on the Discovery Channel's Young Scientist program. In 2005, Ahearn was presented with the Natural History Museum's Public Outreach Award. Ahearn even had an echinoderm named after her in 2007.