Janet Andrewartha (born 16 September 1952) is an Australian actress. She is famous for playing the role of Reb Kean in the popular Australian series Prisoner, which she played from 1984-1986.

Since 1999, she has been in another popular australian series, Neighbours, where she plays the role of Lyn Scully. She also got to act alongside the actress who used to play her mother, Deidre Kean, in Prisoner, Anne Charleston.