Rosemary Anne "Rosie" Batty AO (born 1962) is an English-born Australian domestic violence campaigner. She became a campaigner in 2014, after her 11-year-old son Luke Batty was murdered by his father, Greg Anderson. She was made Australian of the Year in 2015. In 2016, then prime minister of Australia Malcolm Turnbull said of domestic violence in Australia that "cultural change requires a great advocate, and Rosie has been able to do that in a way that I think nobody has done before".