Effa Louise Manley (March 27, 1897 – April 16, 1981) was an American sports executive, and the first woman inducted into the National Baseball Hall of Fame. She co-owned the Newark Eagles baseball franchise in the Negro leagues with her husband Abe Manley from 1935 to 1946 and was sole owner through 1948 after his death. Throughout that time, she served as the team's business manager and fulfilled many of her husband's duties as treasurer of the Negro National League.

She was elected to the National Baseball Hall of Fame in Cooperstown, N.Y. in February 2006.

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