W
- Waco (1915–1917)
- Wagenhals (1910–1915)
- Wahl (1913–1914)
- Waldron (1908–1911)
- Walker (1905–1906)
- Wall (1900–1903)
- Walter (1902–1909)
- Waltham Steam (1898–1902)
- Waltham (1905–1908, 1922)
- Waltham-Orient (see Orient)
- Walworth (1904–1905)
- Ward (1913–1914)
- Ward Electric (1914–1916)
- Ware Steam Wagon (1861–1867)
- Warner (1903–1906)
- Warren (1905)
- Warren (1910–1913)
- Warwick (1901–1905)
- Washington (1909–1912)
- Washington (1921–1924)
- Wasp (1919–1924)
- Waterloo (1903–1905)
- Watrous (1905)
- Watt (1910)
- Waukesha (1906–1910)
- Waverley Electric (1898–1903, 1909–1916)
- Wayne (1904–1908)
- Webb Jay (1908)
- Welch (1903–1911)
- Welch-Detroit (1910–1911)
- Welch-Marquette (see Marquette)
- Westcott (1909–1925)
- Westfield (1901–1903)
- WFS (1911–1912)
- Whaley-Henriette (1898–1900)
- Wharton (1922–1923)
- Whippet (1927–1931)
- White Steamer (1900–1909)
- White (1902–1981)
- White Star (1909–1911)
- Whiting (1910–1912)
- Whitney (1896–1900)
- Wichita (1920–1921)
- Wilcox (1909–1910)
- Wildman (1902)
- Wills Sainte Claire (1921–1927)
- Willys (1916–1918, 1930–1942, 1953–1963)
- Willys-Knight (1914–1933)
- Willys-Overland (1912–1953)
- Wilson (1903–1905)
- Windsor (1906)
- Windsor (1929–1930)
- Wing (1922)
- Winther (1921–1923)
- Winton (1896–1924)
- Wisco (1910)
- Wizard Junior (1920–1921)
- Wolfe (1907–1909)
- Wolverine (1904–1906)
- Wolverine (1917–1919)
- Wolverine (1927–1928)
- Wonder (see Kansas City)
- Woodill (1952–1956)
- Woodruff (1902–1904)
- Woods Electric (1901)
- Woods Electric (1899–1916; Woods Dual Power 1917-1918)
- Woods Mobilette (1913–1916)
- Worth (1902)
- Worth (1906–1910)
- Wyeth (1912–1913)
Read more about this topic: List Of Defunct Automobile Manufacturers Of The United States