With the aims to determine the infection frequency by tapeworms of Diphyllobothrium genus 30 samples from captive wild carnivoves were analyzed. A 30% of the animal analyzed was positive to the infection. Whereas the family Procionidae has a high percentage of positivity (60%), Canidae have lower infection ratio (20-25%). The accuracy for the diagnosis of Diphylobothrium was made by the morphology of scolex, proglottids and eggs. This is the first report of the parasite presence in Argentine wild carnivores.