Mary Morris (born December 13, 1915 in Fiji; died October 14, 1988 in Switzerland) was an English actress. She is perhaps best known for a major role in the science-fiction television drama A for Andromeda (and its sequel, The Andromeda Breakthrough), and her portrayal of Number Two in the Dance of the Dead episode of The Prisoner (where she is speaking dialogue written for a male actor, Trevor Howard, who pulled out just before filming began.)
She also appeared in Doctor Who in 1982 in the story Kinda with Peter Davison.
She played Peter Pan on two occasions: once on the stage (as a Gypsy boy) and once on The Prisoner.