James Asheton Bayard Sr. (July 28, 1767 – August 6, 1815) was an American lawyer and politician from Wilmington, Delaware. He was a member of the Federalist Party, who served as U.S. Representative from Delaware and U.S. Senator from Delaware.

James Asheton Bayard Jr. (November 15, 1799 – June 13, 1880) was an American lawyer and politician from Delaware. He was a member of the Democratic Party and served as U.S. Senator from Delaware.