Gaius is the Greek spelling for the male Roman name Caius, a figure in the New Testament of the Bible.
- A Christian, Gaius is mentioned in Macedonia as a traveling companion of Paul, along with Aristarchus (Acts 19:29).
- One chapter later, Gaius who has a residence in Derbe is named as one of Paul's seven traveling companions who waited for him at Troas (Acts 20:4).
- Gaius is mentioned as having a residence in Corinth as being one of only a few people there (the others being Crispus and the household of Stephanas) who were baptised by Paul, who founded the Church in that city (1 Corinthians 1:14).
- Gaius is referred to in a final greeting portion of the Epistle to the Romans (Romans 16:23) as Paul's "host" and also host of the whole church, in whatever city Paul is writing from at the time. In all likelihood, this was Corinth.
- Lastly, Gaius of Ephesus to whom the third Epistle of John is addressed (3 John 1).[1] He may be Gaius mentioned in any of the other contexts.