The Morals of Marcus Ordeyne or The Morals of Marcus may refer to:
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''The Morals of Marcus Ordeyne'' (novel), a 1905 novel by William John Locke, later developed into a play
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''Morals'' (film), a 1921 film adaptation
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''The Morals of Marcus'' (1915 film), a lost American silent comedy-drama film, based on the novel
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''The Morals of Marcus'' (1935 film), a British comedy film, based on the novel
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