Robert Stewart, Duke of Albany (c. 1340 – 3 September 1420) was a member of the Scottish royal family who served as regent (at least partially) to three Scottish monarchs (Robert II, Robert III, and James I). A ruthless politician, Albany was widely regarded as having caused the murder of his nephew, the Duke of Rothesay, and brother to the future King James I of Scotland. James was held in captivity in England for eighteen years, during which time Albany served as regent in Scotland, king in all but name. He died in 1420 and was succeeded by his son, Murdoch Stewart, Duke of Albany, who was executed for treason when James returned to Scotland in 1425, almost causing the complete ruin of the Albany Stewarts.