A. princeps

A. princeps may refer to:
 * Accipiter princeps, the New Britain goshawk, a bird of prey species endemic to Papua New Guinea
 * Actenoides princeps, the scaly-breasted kingfisher, a bird species endemic to Indonesia
 * Anthene princeps, the cupreous hairtail, a butterfly species found in Africa
 * Artemisia princeps, the Japanese mugwort, a perennial plant species found in Japan
 * Attalea princeps, a palm species in the genus Attalea