Thomas Phillips Johnson (June 8, 1914 – May 23, 2000) was an American attorney, businessman, philanthropist, Republican Party activist, and sportsman who was perhaps best known as a minority owner of the Pittsburgh Pirates Major League Baseball franchise from 1946 through 1984. A committed Pirates' fan who attended 55 Opening Day games, Johnson remained passionate about baseball after 1984 and once again invested in the Pirates as part of a new ownership syndicate headed by Kevin McClatchy in 1996. He died in Pittsburgh from cancer-related respiratory failure at the age of 85 four years later.