Annas was High Priest in Jerusalem about 2000 years ago. His son-in-law Caiaphas was also high priest (Luke 3:2). Each played a role in the trial of Jesus (John 18:12-14). Jesus was first taken to Annas during the trial, who then sent Jesus to Caiaphas (John 18:13, 24). Peter and John were arrested and taken before both Annas and Caiaphas in Acts 4:6. Caiaphas is mentioned in each of the three Bible passages that mention Annas, a possible indication that the two ruled together or shared power.
Next person in the Bible: Antiochus IV