League Park, and variations on that name, used as the name of a Major League Baseball park, was a designation frequently applied in the late 1800s / early 1900s to distinguish a professional team's stadium from a public park or other recreational venue. As such, the term may refer to any one of these former baseball parks:

American League Park, better known as Hilltop Park, in New York City

National League Park in Philadelphia, Pennsylvania, better known as Baker Bowl

League Park in Cleveland, Ohio

League Park (Cincinnati) in Ohio

League Park in St. Louis, Missouri, better known as Robison Field

American League Park in Washington, D.C.

League Park (Toledo) in Ohio

National League Park in Cleveland, Ohio