Caroline Harker (born 1966) is an English stage and television actress, sister of actress Susannah Harker, and daughter of actors Polly Adams and Richard Owens. She is known for her roles as Celia, in the BBC's Middlemarch, and as Woman Police Constable (WPC) (later Detective Sgt.) Hazel Wallace in the ITV police drama A Touch of Frost (1992-2003).

She also played Alicia Davenport in Coronation Street for four episodes in 2012

Harker played the role of 'mother' in the Mike Kenny's adaptation of The Railway Children, directed by Damian Cruden and staged at the Waterloo International railway station. Harker is married to fellow actor Anthony Calf, with whom she has three daughters, Louise Emma Calf (b. December 1983), Cecilia Ann L Calf (b. September 1995), and Anemone Georgiana Calf (b. October 2000).