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Leroy Richard Arthur "Roy" Kettle OBE (born 1949) is a retired United Kingdom civil servant who, among many other achievements, was one of the principal architects of the Disability Discrimination Act 1995.
Science fiction fans know Kettle as a prolific co-author with John Brosnan, publishing under the names Harry Adam Knight and Simon Ian Childer. With Greg Pickersgill, he was a leading light of "Ratfandom" in London in the 1970s. He produced two science fiction fanzines, Fouler (with Pickersgill) and True Rat, both noted for their acid humour; and participated in the oneshot fanzine An Egregious Guide To The Conventions with Pickersgill.