Brachystephanus giganteus, a plant species found in Cameroon and Equatorial Guinea
•
Blaberus giganteus, the giant cockroach, one of the world's longest roach species
Spirobranchus giganteus | Leucopaxillus giganteus | Giganteus Island | Brachystephanus giganteus | Blaberus giganteus |
Leucopaxillus giganteus, the giant leucopax, formerly the giant clitocybe or the giant funnel, a saprobic fungus species
Spirobranchus giganteus, the Christmas tree worm, a small tube-building polychaete worm species