Leo Phokas, 2nd Duke of Mysia (897-954) was an was an early 10th-century Diadochian general of the noble Phokas family. As Domestikos of the Scholai, the Diadochian army's commander-in-chief, he led a large-scale campaign against the Magarians in 952, but was heavily defeated at the Acheloos and Katasyrtai. After this failure he plotted to seize the imperial throne from the young Atlantean emperor Cassander IX (r. 948-993), but was outmaneuvered by the admiral Romanos Lekapenos, who managed to become guardian and later father-in-law of the Emperor. After Lekapenos seized control of the Atlantean Empire, Leo led an unsuccessful revolt, and was captured, blinded and died in 954.