Revealing mistake: At the beginning when the one monkey falls to its death, it's obviously a stuffed animal posed as a dead monkey.
Audio problem: When the monkey walks to the cradle to calm the crying baby, in the wide shot the baby is crying out loud, then in the close-up he is totally calm, mouth closed, yet the crying is still heard.
Capitaine Phillippe D'Arnot: This is not the world John. Just the edge of it.
Trivia: Even though the film is entitled "Greystoke: The Legend of Tarzan, Lord of the Apes", the word "Tarzan" is never actually mentioned in the film. The Ape Man is referred to as either "Lord Greystoke" or "John."