- willowy
- willpower
- wills
- Wills
- Willstätter
- willy-nilly
- willywaw
- willy–nilly
- will–of–the–wisp
- will–o'–the–wisp
- Wilmette
- Wilmington
- Wilmington College
- Wilmington College
- Wilmington College of Ohio
- Wilmot
- Wilms' tumor
- Wilson
- Wilson College
- Wilson College
- Wilson cycle
- Wilson's blackcap
- Wilson's disease
- Wilson's phalarope
- Wilson's snipe