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- William Mason (disambiguation), several people including:
- William Mason (1725–1797) - English poet, editor and gardener
- William Mason (1808–1883) - American steam locomotive builder
- William Mason (Colt) - American machinist and inventor working for Samuel Colt
- William Mason (1829;1908) - composer
- William Mason, first mayor of Dunedin, New Zealand
- Bill Mason (1929–1988), Canadian canoeist and author
- William D. Mason, American politician
- William E. Mason, American politician
- Willie Mason, Australian-Tongan rugby league player
- Willy Mason, musician
Read more about this topic: Mason (surname)