Robert Auriol Hay-Drummond, 10th Earl of Kinnoull PC (18 March 1751 – 19 April 1804) was a Scottish peer and Lord Lyon King of Arms.

In 1739, his father Robert Hay took on the Drummond name and arms as heir of entail of his great-grandfather William, Viscount Strathallan.

[1] Robert Hay-Drummond succeeded to the title of Earl of Kinnoull on 27 December 1787 on the death of his uncle, Thomas Hay.

He was succeeded as Lord Lyon and in the earldom of Kinnoull by his son Thomas.

[1] Hay-Drummond married Julia Eyre on 12 April 1779; she died 29 March 1780.