Ray Greene (February 2, 1765 – January 11, 1849) was a United States senator and Attorney General from Rhode Island during the early days of statehood.

His father was a governor of Rhode Island during the American Revolutionary War, and his mother was a correspondent of Benjamin Franklin.

He was attorney general of Rhode Island from 1794 to 1797, and in the latter year was elected as a Federalist to the United States Senate to fill the vacancy caused by the resignation of William Bradford.

Greene was reelected in 1799 and in total served from November 13, 1797, to March 5, 1801, when he resigned, having been nominated for a judicial position.

He was designated a district judge of Rhode Island by President John Adams, but, through a technicality, was not appointed.