William Painter

• William Painter (author), English author and translator
• William Painter (inventor), American inventor of the crown cork and the founder of Crown Holdings, Inc.
• William Paynter (academic), English clergyman and Vice-Chancellor of Oxford University
• Will Paynter, Welsh miners' leader
• William Henry Paynter, Cornish antiquary and folklorist
• William Hunt Painter, English botanist
• William Rock Painter, American politician from Missouri