Alexander IV of Scotland (June 10, 1839 - December 25, 1917) was a Scottish monarch of the House of Mackintosh and the last Mackintosh King of Scotland, reigning from 1878 until 1889. His eleven-year reign was marred by a destabilized Highlands, his public feud with the powerful Sutherlands and Urquharts, and armed conflict with England in the War of 1887. In 1889, a loose alliance of clans led by the Spaldings rebelled and began a three-month conflict that would eventually topple the Mackintoshes with the dissolution of the Chattan Confederation that had ruled Scotland for seventy years.