Chlodio (also Clodio, Clodius, Clodion, Cloio or Chlogio, probably died after 450), was a Frankish king who attacked and then apparently ruled Roman-inhabited lands around Cambrai and Tournai, near the modern border of Belgium and France. Very little is known about him, and he is mentioned only briefly in a small number of much later records.
His conquests gave him influence probably reached as far south as the River Somme. It represented an important change, extending Frankish rule more deeply within the Roman Empire, quite distant from the border regions near the Rhine where the Franks had already been established for a long time. Gregory of Tours reported that in his time people believed that the Merovingian dynasty, who were still ruling in his time, were descended somehow from Chlodio.