James A. Clark Sr. (October 22, 1884 – March 25, 1955) was the Circuit Judge appointed by Maryland Governor Herbert O'Conor.
James A. Clark Sr. was born at Fairfield Farm, Ellicott City, Maryland.
He was a fifth Circuit Court judge whose family's roots in Howard County, Maryland, traced back to 1797.
During World War II, he served as the Chairman of the Howard County Draft Board.
Clark retired from the Circuit Court on October 22, 1954, and died on March 25, 1955, from a heart attack.