William W. Campbell

William W. Campbell may refer to:
 * William Wallace Campbell (1862–1938), American astronomer
 * William W. Campbell (New York congressman) (1806–1881), US congressman from New York
 * William Wildman Campbell (1853–1927), Ohio politician
 * William Wilfred Campbell (1858–1918), Canadian poet
 * William W. Campbell (New York state senator) (1870–1934), American lawyer and politician from New York
 * William W. Campbell (Schenectady County, NY), New York assemblyman 1921, in 144th New York State Legislature