William McDowell

William McDowell may refer to:


 * William Fraser McDowell (1858–1937), American bishop
 * William John McDowell (1863–1929), Northern Irish politician
 * William Osborn McDowell (1845–1927), American financier and businessman
 * W. W. McDowell (1867–1934), American politician and diplomat
 * William McDowell (cricketer) (1837-1918), Scottish cricketer
 * William McDowell (musician) (born 1976), American musician
 * William D. McDowell, politician and sheriff in New Jersey
 * William Hugh McDowell (1846–1864), VMI cadet killed at the Battle of New Market
 * William G. McDowell (1882–1938), American bishop of Alabama