William Stephen Wasmund (December 1887 – October 4, 1911) was an American football player and coach.

His father, Lebrecht Wasmund, was a stone contractor born in Germany.

[2] Wasmund's play at Lafayette attracted the attention of Fielding H. Yost of the University of Michigan.

[2] Wasmund led the Longhorns to a 6–2 record in 1910, and he was rehired to return as head coach in 1911.

[3] On October 1, 1911, six days before the opening game of the 1911 season, Wasmund fell from the second-story window of the apartment where he was living near the University of Texas campus.