Sir David Ronald Zeidler AC CBE FAA FTSE (18 March 1918 – 12 March 1998) was an Australian chemist and industrialist. Zeidler was born in Melbourne, he attended the Scotch College, Melbourne and continued his education at the University of Melbourne graduating with a Master of Science. When he completed his studies Zeidler was employed by the Council for Scientific and Industrial Research (CSIR) from 1942 to 1952. He worked in the Division of Industrial Chemistry and became leader of the chemical engineering section. During this period he also traveled to the United States where he undertook postgraduate research at the Massachusetts Institute of Technology.