William Ruthven, 1st Lord Ruthven (died c. 1528) was a Scottish nobleman and founder of the noble lines of the Ruthven family. William Ruthven of Ruthven /ˈrɪvən/ was created Lord Ruthven by summons at the Parliament of Scotland in February 1488. James III of Scotland made him a Lord of Parliament to gain his support against his rebels, who intended to make his son James, Duke of Rothesay King. The King left Edinburgh in March 1488, and joined Ruthven at Perth, and they travelled to Aberdeen. The first battle with the Prince's army was near Blackness Castle. The King was forced to negotiate with his rebels, and handed over Ruthven as a hostage.