Ralph Abernethy Gamble (May 6, 1885 – March 4, 1959) was an American politician who represented Westchester County, New York in the United States House of Representatives from 1937 to 1957.

He was a member of the prominent Gamble family of South Dakota.

Gamble was born on May 6, 1885, in Yankton, South Dakota.

He was a member of the New York State Assembly (Westchester Co., 2nd D.) in 1931, 1932, 1933, 1934, 1935, 1936 and 1937.

He was elected to Congress in 1937 to fill the vacancy caused by the resignation of Charles D. Millard and served from November 2, 1937, to January 3, 1957.