As manager William Robert Parks (June 4, 1849 – October 10, 1911) was an American left fielder, pitcher, and manager in Major League Baseball from Easton, Pennsylvania.

A native of Easton, Pennsylvania, Parks played for the Washington Nationals and Philadelphia White Stockings, both of the National Association, in 1875.

Then, in 1876, he played one game for the National League's Boston Red Caps.

He was also manager of the Nationals for the last eight games of the 1875 season, guiding them to a record of 1–7 after they had gone 4–16 under teammate Holly Hollingshead.

This biographical article relating to an American baseball pitcher born in the 1840s is a stub.