Editing List of inventors (section)

===W===
* [[Ruth Graves Wakefield]] (1903–1977), U.S. – [[chocolate chip cookie]]
* [[Paul Walden]] (1863–1957), [[Latvia]]/Russia/Germany – [[Walden inversion]], [[Ethylammonium nitrate]] (the first room temperature [[ionic liquid]])
* [[Adam Walker (inventor)|Adam Walker]] (1730–1821), UK – [[eidouranion]]
* [[Madam C.J. Walker]] (1867–1919), U.S. – beauty and hair products for African American women
* [[Barnes Wallis]] (1887–1979), UK – [[bouncing bomb]]
* [[Frederick Walton]] (c. 1834–1928), UK – [[Linoleum]]
* [[Maurice Ward]] (1933–2011), UK – [[Starlite]]
* [[David Warren (inventor)|David Warren]] (1925–2010), Australia – [[Flight data recorder]] (FDR) and [[Cockpit voice recorder]] (CDR)
* [[Aldred Scott Warthin]] (1866–1931), together with Allen Chronister Starry (1890–1973), U.S. – [[Warthin–Starry stain]] (histology)
* [[Robert Watson-Watt]] (1892–1973), Scotland – microwave [[radar]]
* [[James Watt]] (1736–1819), Scotland – improved [[Steam engine]]
* [[Thomas Wedgwood (1771–1805)|Thomas Wedgwood]] (1771–1805), UK – first (not permanent) photograph
* [[Carl Auer von Welsbach]] (1858–1929), Austria – [[Gas mantle]], [[ferrocerium]]
* [[Jonas Wenström]] (1855–1893), Sweden – [[Three-phase electric power|three-phase electrical power]]
* [[George Westinghouse]] (1846–1914), U.S. – [[Air brake (rail)]]
* [[Charles Wheatstone]] (1802–1875), UK – [[concertina]], [[stereoscope]], [[microphone]], [[Playfair cipher]], [[pseudoscope]], [[Dynamo#Siemens and Wheatstone dynamo (1867)|dynamo]]
* [[Richard T. Whitcomb]] (1921–2009), U.S. – [[Supercritical airfoil]], [[Wingtip device|Winglet]]
* [[Cornelius Whitehouse]] (1796–1883), UK – method of manufacturing tubes cheaply and accurately
* [[Eli Whitney]] (1765–1825), U.S. – [[cotton gin]]
* [[Frank Whittle]] (1907–1996), UK – co-inventor of the [[jet engine]]
* [[Otto Wichterle]] (1913–1989), [[Czechoslovakia]] – [[soft contact lens]]
* [[Norman Wilkinson (artist)|Norman Wilkinson]] (1878–1971), UK – [[Dazzle camouflage]]
* [[Charles Thomson Rees Wilson]] (1869–1959), UK – [[Cloud chamber]]
* [[Paul Winchell]] (1922–2005), U.S. – [[artificial heart]]
* [[Sergei Winogradsky]] (1856–1953), Russia / USSR – [[Winogradsky column]] for culturing microorganisms
* [[Niklaus Wirth]] (1934–2024), Switzerland – [[Pascal (programming language)]]
* [[A. Baldwin Wood]] (1879–1956), U.S. – high volume pump
* [[Norman Joseph Woodland]] (1921–2012), together with [[Bernard Silver]] (1924–1963), U.S. – [[Barcode]]
* [[Granville Woods]] (1856–1910), U.S. – Synchronous Multiplex Railway Telegraph
* [[Steve Wozniak]] (born 1950), U.S. – [[Apple I]] & [[Apple II|II]] computers, early [[Mac (computer)|Macintosh]] concepts,  [[CL 9|CL 9 CORE]] [[universal remote]] and other devices and applications.
* [[James Homer Wright]] (1869–1928), U.S. – [[Wright's stain]] (histology)
* [[Wright brothers]], Orville (1871–1948) and Wilbur (1867–1912), U.S. – [[Fixed-wing aircraft|powered airplane]]
* [[Wu Yulu]], Chinese farmer and inventor of home-made robots
* [[Adam Wybe]] (1584–1653), Dutch – inventor of the cable car on multiple supports
* [[Arthur Wynne]] (1871–1945), UK – creator of [[crossword puzzle]]