Thomas the Apostle was one of the twelve original apostles of Jesus.
In Matthew, Mark, Luke and Acts, he is called Thomas. In John 11:16, he is given a further name, Didymus. On the evening of the day of the resurrection, Thomas declined to believe that Jesus had appeared to the other disciples (John 20:24), hence the term "doubting Thomas." When Jesus appeared again after eight days, Thomas was there also and on seeing Him confessed his faith that Jesus is God (John 20:28).
John 21:2 mentions that Thomas was among those who were at the Sea of Galilee when Jesus appeared to them on another occasion.
Go to: List of people in the Bible