Arthur Stanley Brown (20 May 1912 – 6 July 2002) was an Australian man charged for the 26 August 1970 rape and murder of Judith and Susan Mackay in Townsville, Queensland. The jury failed to reach a verdict, and a new trial was blocked on the grounds that Brown was too senile to be tried again. Brown's arrest attracted wide publicity, leading to a witness to the 1973 Adelaide Oval abductions identifying Brown as the suspect she had seen. Brown is thus considered a prime suspect for both these abductions and the Beaumont children disappearance in 1966.