A Messianic pretender who promised to lead his followers in revolt against Rome; he was killed according to Josephus in 44 CE. In Acts 5: 36–7 Theudas is regarded as preceding another revolutionary, Judas, who died in 6 CE, so it would seem that either Josephus or the Acts has made a mistake. The time when Gamaliel was speaking (Acts 5: 34) was about 30 CE, so that Theudas' rebellion had not then taken place.

However, since there were numerous other disorders, it is just possible that there was another leader called Theudas who lived at an earlier date.