Sir Frederick Edward Warner FRS, FREng (31 March 1910 – 3 July 2010) was a British chemical engineer. He was knighted in 1968, FRS 1976, Leverhulme Medal 1978, Buchanan Medal 1982. He was a founding Fellow of the Royal Academy of Engineering. Warner also received an Honorary Doctorate from Heriot-Watt University in 1978. Warner died on 3 July 2010 at the age of 100.