Mul (died 687) may have briefly ruled as King of Kent following its conquest by his brother, Caedwalla of Wessex, in 686.

The Anglo-Saxon Chronicle tells us that, in 686, "Caedwalla and Mul, his brother, ravaged Kent and Wight." In 687, however, it reports that "Mul was burned in Kent, and 12 other men with him; and that year Caedwalla again ravaged Kent."