A. occultus may refer to:Acerentulus occultus, a species of arthropod Anolis occultus, a species of reptile Arion occultus, a species of gastropod Anthrenus occultus, a species of beetle Antrodiaetus occultus, a species of spider in the genus Antrodiaetus Aprostocetus occultus, a species of wasp in the genus Aprostocetus Aspergillus occultus, a species of fungus