John MacArthur

John MacArthur may refer to:

• John Macarthur (wool pioneer) (1766–1834), Australian wool industry pioneer and Rum Rebel
• John McArthur, Jr. (1823-1890), American architect
• John McArthur (1826–1906), Union general during the American Civil War
• John McArthur (footballer), Australian rules player
• John Duncan McArthur (1854-1927), Canadian industrialist and railway builder
• John Seward MacArthur, inventor of the MacArthur-Forrest Process for gold cyanidation in Glasgow, Scotland in 1887
• John D. MacArthur (1897–1978), American philanthropist
• John H. McArthur (born 1935), Dean, Harvard Business School
• John F. MacArthur (born 1939), American evangelical minister and author
• John R. MacArthur (born 1956), American journalist
• John A. McArthur, New Zealand diplomat and eldest son of John G. McArthur, see List of Ambassadors from New Zealand
• John G. McArthur, New Zealand diplomat, see List of Ambassadors from New Zealand
• John Knox MacArthur, (1891-1918), American World War I flying ace
• General John Gordon MacArthur, a fictional murder victim from Agatha Christie's And Then There Were None