Trevor Asher Kletz, OBE, FREng, FRSC, FIChemE (23 October 1922–31 October 2013) was a prolific British author on the topic of chemical engineering safety. He was a central figure in establishing the discipline of process safety.[1] He is credited with introducing the concept of inherent safety and was a major promoter of Hazop.[2] He is listed in The Palgrave Dictionary of Anglo-Jewish History.[3]