William Macdonald or MacDonald or McDonald may refer to:

• William McDonald (Canadian politician) (1837–1916), Canadian politician from Nova Scotia, Canada
• William Macdonald (historian), American journalist and historian, author of Three Centuries of American Democracy
• William MacDonald (serial killer)
• William Alexander Macdonald, Manitoba, Canada politician
• William Andrew McDonald (1913–2000), American archaeologist
• William Archibald Macdonald (MP) (1841–1911), Irish nationalist politician and MP
• William Bell Macdonald (1807–1862), Scottish linguist
• William C. McDonald (governor) (1858–1918), former Governor of New Mexico
• William Christoper Macdonald (1831–1917), Canadian tobacco manufacturer, philanthropist
• William Colt MacDonald (1891–1968), American writer of westerns
• William Donald Stuart MacDonald (1862–1920), New Zealand politician
• William J. MacDonald (writer and producer)
• William John Macdonald (1832–1916), Canadian merchant and politician
• William Johnson McDonald (1844–1926), American banker who endowed an astronomical observatory
• William Josiah MacDonald (1873–1946), Michigan politician
• William Ross Macdonald (1891–1976), Ontario, Canada lawyer, statesman
• William V. McDonald, Christian scholar
• William Walter McDonald (1844–1929), politician from Northwest Territories, Canada

See also

• Bill McDonald (born 1966), Australian television newscaster
• Bill Macdonald, American sportscaster
• Bill MacDonald (?–1964), Scottish heavyweight boxing champion
• Will McDonald (born 1979), American basketball player
• George William McDonald (1875–?), politician in Manitoba, Canada

This disambiguation page lists articles associated with the same personal name. If an article link led you here, you may wish to change the link to point directly to the intended article.