Planet of the Apes Wiki

Diane Stanley was an American actress who played the role of Stewart in the 1968 film Planet of the Apes. Her only other acting credits are in Bad Girls for the Boys (1966) and Speedway (1968).


  • For a long time within the fan community, it was erroneously believed that actress Natalie Trundy had played the role of Stewart.
  • It has been suggested that Dianne Stanley later became writer and producer Diane Messina Stanley, however, as this person adopted the name 'Stanley' only after her marriage it is very unlikely to be the same person.
  • In the original film the character is only referred to as Lt. Stewart. However, a bonus feature from the Blu-Ray Planet of the Apes Box-Set released in November 2008 ('ANSA Public Service Announcement') gave her the first name Maryann.

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