Paul's host at Corinth when Paul wrote (), "mine host and of the whole church." Baptized by that apostle (). The third epistle of John is addressed to "the well beloved" Gaius or Caius; probably the same, for he evidently had the means to do kindness "to the brethren and to strangers." He was converted through John (-5). A Gaius of Macedonia is mentioned in , and a Gaius of Derbe (); probably distinct men.