Lemuel Jenkins was an American lawyer and politician from New York.
Jenkins was born in Bloomingburgh, then Ulster County, now Sullivan County, New York, the posthumous son of Lemuel Jenkins (1740–1789), originally of Edgartown, Massachusetts, and his third wife Mary (Dunham) Jenkins (1759–1809).
He was admitted to the bar in October 1815, and practiced in Bloomingburgh. He was District Attorney of Sullivan County from 1818 to 1819. Jenkins was elected as a Crawford Democratic-Republican to the 18th United States Congress, holding office from March 4, 1823, to March 3, 1825.
Afterwards he removed to Albany, and resumed the practice of law there. He died in Albany, New York, and was buried at Albany Rural Cemetery in Menands, New York.