|'Born: November 10, 1945 (1945-11-10) (age 65)|
|'Batted:' Right||'Threw:' Right|
|October 2, 1964 for the Milwaukee Braves|
|Last MLB appearance|
|October 4, 1964 for the Milwaukee Braves|
William Frederick Southworth (born November 4, 1945 in Madison, Wisconsin) is a former Major League Baseball third baseman. Southworth played for the Milwaukee Braves in the 1964 season. In 3 career games, he had two hits in seven at-bats. He batted and threw right-handed.
He was signed by the Milwaukee Braves as an amateur free agent in 1964.