Marcus Antoninus may refer to:
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Marcus Aurelius Antoninus (''Marcus Aurelius'') (121–180), Roman emperor from 161 to 180
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Marcus Aurelius Commodus Antoninus (''Commodus'') (161–192), Roman emperor from 180 to 192
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Marcus Aurelius Antoninus (''Caracalla'') (188–217), Roman emperor from 198 to 217
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Marcus Opellius Antoninus Diadumenianus (''Diadumenian'') (208–218), Roman emperor in 218
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Marcus Aurelius Antoninus (''Elagabalus'') (203/4–222), Roman emperor from 218 to 222
{{Hndis, Antoninus, Marcus