MacArthur or Macarthur is a surname, originating with the Scottish Clan MacArthur and now spread through English-speaking countries.
Notable people with the surname include:
Business Catherine T. MacArthur (1909–1981), American businesswoman, philanthropist, wife of John D. MacArthur Elizabeth Macarthur (1766–1850), Australian businesswoman Hannibal Hawkins Macarthur (1788–1861), Australian businessman and politician J. Roderick MacArthur (1920–1984), American businessman and philanthropist John Macarthur (wool pioneer) (1767–1834), Australian businessman, politician, and soldier John D. MacArthur (1897–1978), American businessman and philanthropist
Entertainment Charles MacArthur (1895–1956), American playwright and screenwriter James MacArthur (1937–2010), American actor Mary MacArthur (1930–1949), American actress
Literature John F. MacArthur (1939–2025), American evangelical minister and author John R. MacArthur (born 1956), American journalist
Military Arthur MacArthur, Jr. (1845–1912), American military leader and father of Douglas MacArthur Arthur MacArthur III (1876–1923), American naval officer and brother of Douglas MacArthur Douglas MacArthur (1880–1964), American military leader and U.S. Army General of the Army Edward Macarthur (1789–1872), Anglo-Australian general and administrator George MacArthur-Onslow (1875–1931), Australian general James Macarthur-Onslow (1867–1946), Australian general, politician and company director John Knox MacArthur (1891–1918), American military pilot
Politics Arthur MacArthur, Sr. (1815–1896), American lawyer, judge, and politician Douglas MacArthur II (1909–1997), American diplomat James Macarthur (politician) (1798–1867), Australian pastoralist and politician in the colony of New South Wales
Sports Clarke MacArthur born 1985), Canadian hockey player Ellen MacArthur (born 1976), British yachtswoman Mac MacArthur (1862–1932), Scottish baseball player
Science John Stewart MacArthur (died 1920), chemist from Glasgow Robert MacArthur (1930–1972), American ecologist William Macarthur (1800–1882), Australian botanist and vigneron Judy MacArthur Clark, British veterinarian
Other people Jean MacArthur (1898–2000), second wife of Douglas MacArthur David Macarthur, Australian professor of philosophy, University of Sydney Valena C. Jones (1872–1917) née Valena Cecilia MacArthur, American educator
See also Arthur (surname) McArthur (surname)