Willalooka is a small service town and locality in the Limestone Coast region of South Australia. it is located on the Riddoch Highway between Keith and Padthaway. Christmas Rocks Conservation Park is north of the town adjacent to the highway. Willalooka is home to the world champion shearer, Shannon Warnest.
Services in the town include the Country Fire Service, a community hall, tavern, fuel and general store. The dominant industry in the area is farming, especially sheep.
The bounded locality of Willalooka corresponds to the cadastral Hundred of Willalooka in the County of Buckingham. The hundred was named in 1921 after the earlier pastoral property in the area. Its surveyed area is a rectangle of 147 square miles (380 km2).