Paul's host at Corinth when Paul wrote (Romans 16:23), "mine host and of the whole church." Baptized by that apostle (1 Corinthians 1:14). 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 (3 John 1:4-5). A Gaius of Macedonia is mentioned in Acts 19:29, and a Gaius of Derbe (Acts 20:4); probably distinct men.