As president William Joseph Shettsline (October 25, 1863 – February 22, 1933) was a baseball executive who served as the business manager of the Philadelphia Phillies of the National League from 1896 to 1926.

Shettsline began his career with the Phillies in 1883 as an office boy and by 1896 was the club's secretary and business manager.

However, the team's 94–58 record that year was only good enough for third place in the National League.

[4] In 1902, Shettsline also served as general manager of the Philadelphia Phillies of the National Football League, a three-team football league not related to the present-day NFL.

[7] Shettsline was replaced as president when the club was sold in 1909 but stayed on as business manager until November 19, 1926.