William McCormack (disambiguation)

William McCormack was Premier of Queensland.

William McCormack is also the name of:

• William J. McCormack (1933–2016), Chief of Police of the Metro Toronto Police
• William Jerome McCormack (1924–2013), American Prelate of Roman Catholic Church
• William J. McCormack (businessman) (1890–1965), New York City businessman
• William McCormack (cricketer) (1877–1946), Australian cricketer
• John William McCormack (1891–1980), Speaker of the United States House of Representatives