Thomas Phillips Johnson (June 8, 1914 – May 23, 2000) was an American attorney, businessman, philanthropist, Republican Party activist, and sportsman.

After he interrupted his legal career to serve in the United States Navy during World War II, at war's end he became a founder of the law firm of Kirkpatrick & Lockhart; by the time of Johnson's death, the firm (now K&L Gates) had become Pittsburgh's largest.

[2] In August 1946, Johnson joined a group headed by Indianapolis businessman Frank E. McKinney that purchased the Pirates' franchise from its longtime owners, the Barney Dreyfuss family.

Johnson retained his share in the team until selling it to the Galbreath family in 1984 and, as a Pittsburgh resident and leading member of its business and legal circles, played a key role in ownership and management decisions through three Pirate World Series championship seasons (1960, 1971 and 1979).

[1] He died in Pittsburgh from cancer-related respiratory failure[4] at the age of 85 four years later, with his family trust maintaining a share in the baseball club.