Orroroo is a town in the Flinders Ranges region of South Australia. At the 2006 census, Orroroo had a population of 543. The Wilmington-Ucolta Road passes through here, intersecting there with the southern stretch of the Birdsville and Oodnadatta Tracks. The narrow gauge rail line was extended to Orroroo also in 1881 and Quorn in 1882, connecting with the new line from Port Augusta. This line has now been abandoned.