Joshua Dallas "Dal" Marvil (October 24, 1910 – March 12, 1977)[1] was an American football player and coach.

[2] In 1930, he helped lead the Wildcats football team to a Big Ten Conference championship and was selected by the Associated Press as a second-team All-Western player.

[9] The Chicago Daily Tribune in October 1931 commented on Marvil's weight: "Dal's chassis is of such a roly poly nature that it is very deceptive to his opponents.

"[2] In February 1932, Marvil was hired to serve during the 1933 season as the head line coach for the University of San Francisco football team.

[10][11] In April 1933, he became engaged to Dorothy Florence Ames of LaGrange, Illinois, who he met while attending Northwestern.