A wallaroo is a medium-sized marsupial found in Australia. It can also be:
Places Wallaroo, New South Wales, a rural locality near Canberra in New South Wales in Australia Wallaroo, Queensland, a rural locality in the Central Highlands Region Wallaroo, South Australia (disambiguation), articles associated with the town and locality Wallaroo, Western Australia a town in Australia
Ships HMS Wallaroo (1890), a Pearl-class cruiser active off Australia before World War I HMAS Wallaroo, a Bathurst-class corvette sunk in a collision during World War II Wallaroo, a Sydney K-class ferry
Rugby football Wallaroo FC, a Sydney rugby union football club 1870 to 1899
The "Wallaroos", the Australia women's national rugby union team