Oakland Athletics, previously known as the "Kansas City Athletics" (1955-1967) and the "Philadelphia Athletics" (1901-1954)

Philadelphia Athletics (1860-1876), played in the National Association from 1871 through 1875, and in the National League in 1876

Philadelphia Athletics (American Association), a team that played in the American Association from 1882 through 1890

Philadelphia Quakers/Athletics (PL/AA), played in the American Association in 1891