W
- Robert Wade — Wade Defence
- Richard Wagner — Wagner tuba, a brass instrument that combines elements of both the French horn and the tuba.
- Samuel Wallis, 18th century navigator — Wallis and Futuna
- Sam Walton — Wal-Mart and Sam's Club
- Preston Ware — Ware Opening
- the brothers Jack Warner, Sam Warner, Harold Warner and Albert Warner — Warner Bros.
- Arthur P. Warner and John K. Stewart — Stewart-Warner
- George Washington — Washington and Washington D.C.
- James Watt (1736–1819) — the watt, a unit of power
- Wilhelm Eduard Weber — weber, unit of magnetic flux
- Friedrich Wegener — Wegener's granulomatosis
- Peter J. Weinberger — the second letter of the name awk, a computer pattern/action language, is taken from Weinberger
- Duke of Wellington — Beef Wellington, Wellington boot, Wellington (New Zealand), Wellingtonia (tree)
- Eudora Welty — Eudora, an e-mail client.
- Mae West (1893–1980), busty actress for whom the flotation safety vest was named.
- Thomas West, 3rd Baron De La Warr — Delaware
- George Hoyt Whipple — Whipple's disease
- Gough Whitlam, Australian Prime Minister - The Whitlams pop group
- Frederick Methvan Whyte (1865–1941) — Whyte notation
- Wilhelm Wien — Wien's displacement law
- Eugene Wigner — Wigner's friend
- Erik Adolf von Willebrand — Von Willebrand disease, Von Willebrand factor
- Max Wilms, a German surgeon — Wilms' tumor
- Samuel Alexander Kinnier Wilson — Wilson's disease, Wilson disease protein
- Oliver F. Winchester — chief investor Winchester repeating rifle
- Caspar Wistar (1761–1818) — Wisteria
- Kaspar Friedrich Wolff — Wolffian duct
- Frank Winfield Woolworth - Woolworth Building
Read more about this topic: List Of Eponyms (L-Z)