Gwendoline Jean Plumb AM BEM (2 August 1912 – 5 June 2002), was an Australian performer of international appeal, actress and comedian active in literally every form of the art genre, (except circus) including revue, pantomime, vaudeville, interviewing, game shows, live appearances, compering, radio production, scriptwriting and acting, television soap opera and mini-series and made-for-TV film.

She was considered the "Grand Dame of Australian entertainment", with a career spanning 65 years, best known to local and international audiences in serial The Young Doctors as gossip Ada Simmonds, the ill-fated Richmond Hill as Mum Foote and the pilot of Home and Away as Doris Peters.

[8] She is probably best remembered for the Australian soap opera The Young Doctors as Ada Simmonds for its entire November 1976 – March 1983 run.

She acted in Neighbours as Mrs. Forbes in 1985, appearing in scenes opposite Alan Dale, with whom she had starred in The Young Doctors.

[15] Plumb's lifelong partner was Australian radio, stage and screen actress Thelma Scott, best known for playing pompous socialite Clair Houghton in the TV series Number 96.