James William Deaderick (November 25, 1812 – October 8, 1890) was an American attorney who served as Chief Justice of the Tennessee Supreme Court from 1876 to 1886.
Prior to becoming Chief Justice, he was an associate justice of the court, having been elected to the bench in 1870 after the enaction of the new state constitution.
He had previously served one term in the Tennessee Senate (1851–1853), and campaigned as an elector for presidential candidate John Bell in 1860.