A. audax may refer to: Abacetus audax, a ground beetle found in Chad and Côte d'Ivoire Acentrogobius audax, a goby found in the coasts of the Indian and western Pacific Oceans Agrilus audax, a jewel beetle found in North America Allotinus audax, a synonym of Allotinus fallax, a butterfly found in Asia Aphanotriccus audax, the black-billed flycatcher, a bird found in Colombia and Panama Aquila audax, the wedge-tailed eagle, a bird found in Australia Archips audax, a moth found in Japan Attus audax, a synonym of Phidippus audax, the bold jumping spider, native to North America