Aru may refer to: Aru Islands, a group of 95 islands in the Moluccas, Indonesia Aru, Democratic Republic of Congo Alpha Rho Upsilon fraternity American Railway Union Anglia Ruskin University Aquarium Rescue Unit, an American jam band Army Rugby Union The National Rail code for Arundel railway station, United Kingdom Australian Rugby Union Interactive voice response, aka Automated Response Unit Armed Response Unit Autonomous Recording Unit… (More on Aru)