The Hundred of Wallaroo is a cadastral unit of hundred located on the Copper Coast of South Australia.

[1] It is one of the 16 hundreds of the County of Daly.

[2] It was named in 1862 by Governor Dominick Daly[1] after the indigenous term wadla warru presumed to mean wallaby urine.

[1] The most densely populated town and localities of the Copper Coast council are situated inside (or largely inside) the bounds of the Hundred of Wallaroo: