Other
- Alan Willett, American murderer put to death in Arkansas in 1993
- Allan Willett, Lord Lieutenant of Kent
- Chad Willett, a Canadian television and film actor
- Don Willett, a Supreme Court of Texas justice
- Jason Willett, American rock musician
- Dr. Walter Willett, an American physician and nutrition researcher
- William Willett, an English promoter of daylight saving time
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