Brian Randell is a United Kingdom computer scientist, specializing in research in Software fault tolerance and Dependability. He is also interested in, and a noted authority on, the early (prior to 1950) history of computers; he was a co-founder of the IEEE Annals of the History of Computing journal.

His initial work, during 1957–1964 while he was employed at English Electric was on compilers; his work on Algol 60 is particularly known. He then joined IBM, where he worked at the T. J. Watson Research Center on high performance computer architecture and also on operating system design methodology.

He then became Professor of Computing Science at the University of Newcastle upon Tyne. His work there, from 1971 onward, was in the area of software fault tolerance and dependability.

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