Ian McDonald

Ian McDonald may refer to:
 * Ian McDonald (civil servant) (1936−2019), Ministry of Defence spokesman during the Falklands War
 * Ian McDonald (musician) (1946−2022), member of King Crimson, 1969−70, and Foreigner, 1977−79
 * Iain Matthews (born 1946), previously known as Ian McDonald, member of Fairport Convention
 * Ian McDonald (cricketer) (1923−2019), Australian cricketer
 * Ian McDonald (footballer, born 1951) (born 1951), Scottish football midfielder with Darlington
 * Ian McDonald (footballer, born 1953), English football midfielder with York City and Aldershot, among others
 * Ian McDonald (footballer, born 1958) (born 1958), Scottish football midfielder with Partick Thistle and Greenock Morton, among others
 * Ian McDonald (Guyanese writer) (born 1933), Caribbean-born writer
 * Ian McDonald (British author) (born 1960), British science fiction novelist
 * Ian Donald Roy McDonald (1898−1920), World War I flying ace
 * W. Ian McDonald (1933−2006), New Zealand neurologist, academic, and specialist in multiple sclerosis

Ian MacDonald may refer to:
 * Ian MacDonald (1948−2003), pen-name for British music critic Ian MacCormick
 * Ian MacDonald (footballer) (born 1953), Scottish football defender with St. Johnstone and Carlisle, among others
 * Ian MacDonald (oceanographer), American Biological Oceanographer, Florida State University
 * Ian MacDonald (actor) (1914−1978), American actor and producer
 * Ian MacDonald (politician), former public school teacher and former Mayor of Charlottetown, Prince Edward Island, Canada
 * Ian Macdonald (Australian politician) (born 1945), Australian federal politician
 * Ian Macdonald (Scottish politician) (born 1934), Scottish nationalist activist
 * Ian Macdonald (barrister) (1939−2019), Scottish barrister
 * Ian Macdonald (New South Wales politician) (born 1949), former Australian state politician
 * Ian G. Macdonald (1928−2023), British mathematician
 * L. Ian MacDonald (born 1947), Canadian writer, broadcaster, and diplomat
 * H. Ian Macdonald (born 1929), Canadian economist, civil servant, and President of York University, 1974−1984
 * Ian MacDonald (architect) (born 1953), Canadian architect
 * Ian Verner Macdonald (1925–2022), Canadian writer and diplomat
 * Ian MacDonald (physician) (1873−1932), Scottish physician
 * Ian MacDonald (rugby union) (born 1968), South African rugby union player
 * Ian Macdonald, Canadian musician, keyboard player for the 1990s band Punchbuggy
 * Ian Macdonald, character in the 1927 film Annie Laurie

Iain MacDonald or McDonald may refer to:


 * Iain MacDonald (businessman), Irish entrepreneur
 * Iain B. MacDonald, British television director
 * Iain Fraoch MacDonald (died 1368), founder of Clan MacDonald of Glencoe
 * Iain Sprangach MacDonald (died 1340), founder of Clan MacDonald of Ardnamurchan
 * Iain McDonald (born 1952), Scottish football winger with Rangers and Dundee United
 * Iain MacDonald, Scottish bagpiper, member of the MacDonald Brothers