David and Catherine Birnie

| birth_place= | death_date= | cause= | victims=4+ | country=Australia | states=Western Australia | beginyear= | endyear= | apprehended= | children=7 (1 deceased) | spouse= Donald McLaughlin (1971–1985; he died in 1999)
David Birnie | sentence= Four terms of life imprisonment }} David John Birnie (16 February 1951 – 7 October 2005) and Catherine Margaret Birnie (née Harrison; born 23 May 1951) were an Australian couple from Perth who murdered four women at their home in 1986, also attempting to murder a fifth. These crimes were referred to in the press as the Moorhouse murders, after the Birnies' address at 3 Moorhouse Street in Willagee, a suburb of Perth. Provided by Wikipedia