Aurantius may refer to:
Conus aurantius, species of sea snail in the family Conidae Costemilophus aurantius, species of beetle in the family Cerambycidae Cystiscus aurantius, species of very small sea snail in the family Cystiscidae Fusus aurantius, species of sea snail in the family Fasciolariidae Paraphidippus aurantius, species of jumping spider, known as the golden jumping spider Polinices aurantius, species of predatory sea snail in the family Naticidae Rugathodes aurantius, species of cobweb spider in the family Theridiidae Sceloporus aurantius, the southern occidental bunchgrass lizard, a species of phrynosomatid lizard