Alexios Charon (Greek: Ἀλέξιος Χάρων, fl. early 11th century) was a Byzantine official in southern Italy and the maternal grandfather of Emperor Alexios I Komnenos (reigned 1081–1118), the founder of the Komnenian dynasty. Very little is known about his life. The only references to him come from the history of Nikephoros Bryennios the Younger, who married his great-granddaughter Anna Komnene. Bryennios reports that "Charon" was a sobriquet given to him for his bravery, referring to the ferryman of the underworld in Greek mythology, but the name is attested as an actual surname as well.