William Augustin Martin Jr. (June 1, 1878 – August 5, 1955) was an American college football player and coach.

He served as the head football coach at the University of Alabama in 1899, compiling a record of 3–1.

[further explanation needed] Martin died after a heart attack in 1955.

[1] # denotes interim head coach

This biographical article relating to a college football coach first appointed in the 1890s is a stub.