William Thomas Dunn

William Thomas "Mother" Dunn  (May 13, 1881 in Youngstown, Ohio – November 17, 1962 on Maui) was a collegiate American football player, who played linebacker and center for Penn State University. Dunn captained the 1906 Penn State Nittany Lions football team and that year became the first player outside of the Ivy League to be selected as an All-American by Walter Camp. He was also the first great linebacker in the history of the school that would eventually be nicknamed "Linebacker U" for its traditional excellence at the position.

William Dunn is also featured on the Official 2011 Nittany Lion Football Schedule Poster as part of the celebration of 125 years of Penn State Football.