C
- Caroline Atherton Mason (née Briggs) (1823–1890), American poet
- Charles Mason (of the Mason-Dixon line), British astronomer
- Charles Harrison Mason, American religious leader
- Cheryl Mason, character from the Silent Hill series
- Chris Mason (disambiguation), several people including:
- Chris Mason, Canadian ice hockey player
- Chris Mason, British darts player
- Clarence Mason, American lawyer and professional wrestling manager
- Colin Mason, Australian author, journalist and politician
- Connie Mason, American model
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