The book "The Giant Liver Fluke, Fascioloides magna: Past, Present and Future Research" provides a comprehensive analysis of the giant liver fluke, a significant liver trematode found in both wild and domesticated ruminants. The monograph covers various aspects of research on Fascioloides magna, including its general information, distribution, and host spectrum. Additionally, it summarizes the latest research on the molecular structure of relevant genes that have been used to clarify the taxonomy and biogeography of this veterinary-important parasite. Due to its biology, distribution, and medical implications, the giant liver fluke attracts the interest of a wide range of professionals, including veterinarians, hunters, farmers, and scientists. The book highlights the pathological effects of the parasite, which range from moderate infections to fatal outcomes, and offers valuable insights into the origins and spread of this invasive organism.