Catherine Russell (born 1966 in London) is a British stage, television and screen actress.

Russell has starred in several television series including playing Hugh Bonneville's sister, Rachel Cazalet, in The Cazalets, Gemma Jones' daughter in Chelworth, the title role of Elly Chandler in Chandler & Co with Barbara Flynn and subsequently Susan Fleetwood; Nathaniel Parker's wife in The Inspector Lynley Mysteries and Martin Shaw's wife in Always and Everyone. Other television includes guest appearances in Messiah, Poirot, Waking the Dead, Sherlock Holmes, Maigret, Silent Witness, Holding On and Pete versus Life (series one and two) with Rafe Spall. She has been playing surgeon, Serena Campbell, in the BBC medical drama Holby City since 1 May 2012.

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