Frances Knoche Marlatt (March 24, 1901 – November 28, 1969) was an American lawyer and politician from New York.

She was born on March 24, 1901,[1] in Buffalo, New York, the daughter of painter Hamilton Irving Marlatt (1860–1929) and Lillie Belle (Knoche) Marlatt.

She was Editor-in-Chief of the New York University Law Review, the first woman to hold that position.

[4] She was admitted to the bar in 1926, and practiced law in Mount Vernon.

In 1949, she was appointed to the Board of Supervisors of Westchester County, to fill the vacancy caused by the resignation of Charles L.