Charles John Biddle (April 30, 1819 – September 28, 1873) was an American soldier, lawyer, congressman, and newspaper editor.

In October of that year he was elected to the Thirty-seventh United States Congress to fill the vacancy caused by the resignation of Edward J. Morris.

His only separate publication was The Case of Major André, a carefully prepared essay read before the Historical Society of Pennsylvania, which vindicated the action of George Washington.

The immediate occasion was a passage in Lord Mahon's History of England that denounced the execution of André as the greatest blot upon Washington's record.

By an authority so high as the London Critic, this essay was subsequently pronounced a fair refutation of Lord Mahon's charge.