Grey Cooper (c. 1726 – 30 July 1801) was an English politician who sat in the House of Commons between 1765 and 1790 and was Secretary to the Treasury under various administrations.
Cooper was the son of William Cooper MD of Newcastle upon Tyne. He was educated at Durham School and Trinity College, Cambridge where he was scholar in 1745 and was awarded BA in 1747 and MA in 1750. He was admitted at Inner Temple on 17 July 1747 and was called to the bar. He became a Fellow of Trinity College in 1749.
He was a Member of Parliament (MP) for Rochester from 1765 to 1768. He was a MP for Grampound, Cornwall from 1768 to 1774. He was a MP for Saltash from 1774 to 1784. He was a MP for Richmond, Yorkshire from 1786 to 1790. For much of his career he was Secretary of the Treasury under various administrations. He claimed to have inherited the baronetcy of Cooper of Gogan from 1775 on, thus calling himself Sir Grey Cooper, Bart.; whether that baronetcy ever existed and whether Cooper was heir to it are doubtful.
Grey died suddenly at his home in Worlington, Suffolk at the age of 75.