Lemuel Hastings Arnold (January 29, 1792 – June 27, 1852) was an American politician from the U.S. state of Rhode Island.

A Whig, he served as the 12th Governor of the State of Rhode Island and a member of the U.S. House of Representatives.

[1] His father died soon after his birth, and Arnold's mother moved the family to Rhode Island.

[3] Arnold also served as a member of the Rhode Island Executive Council during the Dorr Rebellion from 1842 to 1843.

[5] After leaving politics, he practiced law in South Kingstown, Rhode Island, until his death on June 27, 1852.