Ralph Owen Slatyer AC FAA (16 April 1929 – 26 July 2012) was an Australian ecologist, and the first Chief Scientist of Australia from 1989 to 1992. He was born in Perth, Western Australia in 1929, and was educated at Perth Modern School and Wesley College, Perth, then the University of Western Australia from which he graduated with Bachelor’s (1951) Master’s (1955) and Doctoral (1960) degrees in agricultural science.