Thomas Hay, Lord Huntingdon (1707–1755) was a Scottish lawyer and Senator of the College of Justice.
He was born in Edinburgh (or nearby Haddington) the son of Alexander Hay of Huntingdon and his wife Mary Gordon.
[citation needed] Thomas trained in Law in Edinburgh and passed the Scottish bar as an advocate around 1730.
On 28 November 1754 he was elected a Senator of the College of Justice in place of John Pringle, Lord Haining.
[citation needed] Margaret (Lady Huntingdon) lived her final days at World's End Close on the Royal Mile in Edinburgh.