A. gracilis may refer to:
Acanthorhodeus gracilis, the Khanka spiny bitterling, a temperate freshwater fish species Aechmea gracilis, a plant species endemic to Brazil Aepyornis gracilis, an extinct bird species Aglaia gracilis, a plant species endemic to Fiji Aldrovandia gracilis, a fish species Ameles gracilis, a praying mantis species found on the Canary Islands Ammannia gracilis, the large ammannia, red ammannia or pink ammannia, a plant species Anas gracilis, the grey teal, a dabbling duck species found in open wetlands in New Guinea, Australia, New Zealand, Vanuatu and Solomon Andropadus gracilis, the grey greenbul, a songbird species Antennacanthopodia gracilis, an extinct species possibly ancestral to modern day Velvet worms Anubias gracilis, a palm species Archimantis gracilis, a praying mantis species Argonauta gracilis, the knobby argonaut, a pelagic octopus species Arnica gracilis, the slender leopardbane, a plant species of the genus Arnica Asterella gracilis, a bryophyte species in the genus Asterella Atelopus gracilis, the rana jambato del Pacífico, a toad species Austromenidia gracilis, a fish species endemic to Chile
Synonyms Araneus gracilis, a synonym for Argiope argentata, a spider species Autographa gracilis, a synonym for Plusia putnami, a moth species
See also Gracilis (disambiguation)