Robert IV of Scotland (15 April 1854 - 3 November 1927) was a Scottish nobleman and was the second Spalding King of Scotland, reigning from his brother's death in 1921 until his own death in 1927. His brief reign was notable for normalizing relations with Socialist England and his ambitious endorsement of a growing Scottish presence on the European stage, visiting Ireland, France, Spain and Portugal during his reign to try to carve out a niche for the growing country as a regional player. He was succeeded by his only child, Henry I.