Ceolwulf (died 611) was a King of Wessex. At that early date the West Saxons were called the Gewisse, and in his Dictionary of National Biography entry he is given the title "king of the Gewisse". According to the Anglo-Saxon Chronicle he reigned fourteen years and the Annals of St Neots also allot him fourteen years. The West Saxon Genealogical Regnal List gives him a reign of seventeen years. It is not certain whether his successor, Cynegils, was his son or the son of his older brother Ceol.