Warren Wallace Beckwith Sr. (August 10, 1874 – September 24, 1955) was an American sportsman, historical figure, and part of the Lincoln family, having been married to President Abraham Lincoln's granddaughter Jessie Harlan Lincoln. He was the father of the last undisputed direct Lincoln descendant, Robert Todd Lincoln Beckwith, and of Mary Lincoln Beckwith. Beckwith was a minor league baseball player during the late 1800s.