Parasitic infections associated with terrestrial gastropods remain a neglected public health concern in sub-Saharan Africa, sustained by environmental and host-related factors. This study examined the ecological and host-related determinants of parasite prevalence and diversity in edible land snails from Southeast Nigeria. A cross-sectional study was conducted over six months. Snails were collected and identified using standard morphological features. Morphometric parameters (shell length, width, and weight) were recorded, and specimens were grouped into four stages. Snails were euthanized and dissected for parasitological analysis using standard laboratory procedures. A total of 834 snails comprising Achatina achatina, Archachatina marginata and Achatina fulica were examined. Achatina achatina was the most abundant species (346), while A. fulica was the least represented (189). Overall prevalence of infection was 45.6% (380/834), with parasites including protozoans, trematodes, nematodes, and mites. Infection rates were highest in A. achatina (192) and lowest in A. fulica (21). Achatina achatina also exhibited the highest parasite diversity. Edible land snails act as reservoirs of parasitic infections, with patterns influenced by host species. Enhanced public health awareness, improved food safety practices, and sustained epidemiological surveillance are recommended mitigation measures for endemic rural settings.