Simon (later renamed Peter), Andrew, James, his brother John, Philip, Thomas, Matthew (also known as Levi), James the son of Alpheus, Judas/Thaddeus/Lebbaeus (whose surname was Thaddaeus), Simon, and Judas Iscariot. After Judas Iscariot committed suicide, Matthias was chosen to replace him by the remaining 11 (as Jesus had already ascended), but Jesus chose Saul, later called Paul, in a vision; the Bible isn't completely clear on whether Matthias wasn't God's choice, or if Paul would be a 13
th apostle.
From Matthew 10..... 1. Simon, who is called Peter... 2. Andrew (Simon Peter's brother)... 3. James... 4. John (James' brother)... 5. Philip... 6. Bartholomew... 7. Thomas... 8. Matthew, also know as Levi... 9. James (the son of Alphaeus)... 10. Lebbaeus, whose surname was Thaddaeus... 11. Simon the Cananite... 12. Judas Iscariot
From Mark 3..... 1. Simon, whom Jesus called Peter... 2. James... 3. John (James' brother)... 4. Andrew (not mentioned as Simon Peter's brother here)... 5. Philip... 6. Bartholomew... 7. Matthew... 8. Thomas... 9. James (the son of Alphaeus)... 10. Thaddaeus... 11. Simon the Cananite... 12. Judas Iscariot
From Luke 6..... 1. Simon, whom Jesus named Peter... 2. Andrew (Simon Peter's brother)... 3. James... 4. John (James and John are not mentioned as brother here)... 5. Philip... 6. Bartholomew... 7. Matthew... 8. Thomas... 9. James (the son of Alphaeus)... 10. Simon called the Zealot... 11. Judas (the son of James)... 12. Judas Iscariot
From Acts 1..... 1. Peter... 2. James... 3. John... 4. Andrew... 5. Philip... 6. Thomas... 7. Bartholomew... 8. Matthew... 9. James (the son of Alphaeus)... 10. Simon the Zealot... 11. Judas (the son of James)... 12. Matthias replaced Judas Iscariot who betrayed Jesus
The book of John does not give a list of the 12 apostles.
There is only one name that is not consistent in the four lists that are given by Matthew, Mark, Luke and in Acts, which is Lebbaeus/Thaddaeus/Judas (the son of James).
It was Matthias, not Bartholomew who replaced Judas Iscariot. Bartholomew was a part of the original 12. As well, Paul did not replace Matthias. Paul became an apostle in addition. There was no rule that there was only supposed to be 12 apostles. Judas Iscariot had to be replaced because when the apostles went out to minister, they went out in groups of two's. So if there were only 11 that would have not been possible.
Expanding upon the previous answer: Paul was not a thirteenth apostle, nor was he even made an apostle right away after his conversion from Saul. The Bible doesn't say exactly who he replaced, but it is possible that Paul replaced James after he was martyred by King Herod in the book of Acts. Either way, Paul became an apostle after an existing apostle was killed. Never were there more than twelve apostles at one time. Paul traveled with Barnabas before he became an apostle, so that Barnabas had a companion to travel with. Later on, Paul began traveling with Silas as his companion.
Expanding upon the previous answer:
There is no place in the Bible that says that there was to exclusively be only twelve apostles, nor that there could not be any more than twelve. We can only really speculate about this from what we read in the Bible. The answer to the question is already listed and can be found in the books of MATTHEW, MARK, LUKE and ACTS.
They were Matthew, John, James, philip, Peter , andrew, Judas,Thomas, barthalemew Thadeus, James and Simon.