The Irish Wildlife Trust says it objects to the current classification of wild boar as an invasive species in Ireland.
It follows a number of sightings of the animal in Ireland in recent years.
These are thought to have been illegally released, possibly for the purpose of hunting.
Last month, a wild boar was reported to have been trapped and killed in the Slieve Bloom Mountains.
Wild boar became extinct in Ireland in pre-historic times, due to overhunting and deforestation.
The IWT says the animal's current invasive classification "does not fit the definition of an invasive species as laid out by the UN Convention on Biological Diversity (CBD)".
"We feel that this move confuses members of the public about what an invasive species actually is, making it more difficult to raise awareness about the threats from actual invasives, such as grey squirrel, rhododendron and zebra mussel," the group said.
Invasive Species Ireland lists wild boar as one of its "most unwanted" invasive species, as they are "known to damage crops, gardens, amenity areas as well as potentially spreading disease".
The IWT says if a population of wild boar is now established in Ireland, then it would like a study to be conducted on the "purity of animals", genetic origin, disease status and habitat availability for such a population.
