Jack MacDonald

Jack MacDonald may refer to:
 * Jack MacDonald (communist) (1888–1941), Scottish-Canadian communist
 * Jack MacDonald (Hamilton politician) (1927–2010), politician, businessman, and journalist in Hamilton, Ontario, Canada
 * Jack MacDonald (footballer) (born 1927), Australian rules footballer
 * Jack Macdonald (sportsman) (1907–1982), New Zealand sportsman