George Hay, 7th Earl of Erroll

The Right Honourable The Earl of Erroll PC
Arms of the Earl of Erroll
11th Lord High Constable of Scotland
In office 1541–1573
Preceded by	William Hay
Succeeded by	Andrew Hay
Personal details
Born	c. 1508 Errol, Perthshire, Scotland
Died	30 January 1573 Perth, Perthshire
Spouse(s)	Margaret Robertson Helen Bryson

George Hay, 7th Earl of Erroll PC (c. 1508 – 30 January 1573) was a Scottish nobleman and politician.

Hay was the grandson of William Hay, 3rd Earl of Erroll; George's father Thomas was killed alongside his older brother, William Hay, 4th Earl of Erroll, at the Battle of Flodden in 1513.

After his cousin William Hay, 6th Earl of Erroll died in 1541 leaving only a young daughter, George succeeded to the earldom and with it the family title of Lord High Constable of Scotland. The sixth earl, who inherited the earldom as a toddler, died under the age of 21; by the time George inherited the titles, the barony had been in the possession of the crown for 19 years, four months.

In September and December 1741, the crown transferred into the new earl's hands the lands and baronies of Errol, Capeth, Inchiref, and Fossoquhy in Perthshire; Cowie in Kincardine, Cassingray in Fife; Dronlaw and Innerpeffer in Forfarshire; and Slains in Aberdeenshire.

The Peerage of Scotland is unique in that it allows the titles to descend along the female lines; Jean, the young daughter of the sixth earl of Erroll, could have conceivable inherited the earldom as Countess of Erroll. Instead, the crown negotiated for George to inherit, with the condition that he pay 4,000 merks to Helen, Dowager Countess of Erroll and to marry one of his sons to Jean Hay "at the King’s pleasure."

Following the death of James V of Scotland—leaving only six-day old Princess Mary as his successor—Erroll was one of the Scottish nobles who signed an agreement to support taking the regency from the Earl of Arran in favour of the Queen Mother by suggesting that his father's divorce and second marriage were invalid, making Arran illegitimate. In April 1567, Erroll was a signatory to Ainslie's Tavern Band agreeing to the marriage of Mary, Queen of Scots to the Earl of Bothwell.