12 Disciples

1. Simon: called Peter (Grk. petros, petra; Aram. kēf; Engl. rock) by Jesus, also known as Simon bar Jonah and Simon bar Jochanan (Aram.) and earlier (Pauline Epistles were written first) Cephas (Aram.) by Paul of Tarsus and Simon Peter, a fisherman from Bethsaida "of Galilee" (John 1:44; cf. 12:21)
2. Andrew: brother of Peter, a Bethsaida fisherman and disciple of John the Baptist, and also the First-Called Apostle
3. James and
4. John: sons of Zebedee, called by Jesus Boanerges (an Aramaic name explained in Mk 3:17 as "Sons of Thunder")
5. Philip: from Bethsaida "of Galilee" (John 1:44, 12:21)
6. Bartholomew: in Aramaic "bar-Talemai?", "son of Talemai" or from Ptolemais, sometimes identified with the Nathanael of John 1:45-1:51.
7. Thomas: also known as Judas Thomas Didymus - Aramaic T'oma' = twin, and Greek Didymous = twin
8. James, son of Alphaeus: commonly identified with James the Less. Sometimes also identified with James the Just^[2]
9. Matthew: the tax collector, some identify with Levi son of Alphaeus
10. Simon the Canaanite: called in Luke and Acts "Simon the Zealot", some identify with Simeon of Jerusalem, which others dispute on the grounds that Simeon was described at the time of Jesus' birth some thirty years before, as an old man not far from death. ^[3]
11. Judas Iscariot: the name Iscariot may refer to the Judaean towns of Kerioth or to the sicarii (Jewish nationalist insurrectionists), or to Issachar. Also referred to (e.g. at John 6:71 and 13:26) as "Judas, the son of Simon". He was replaced as an apostle in Acts by Matthias.
12. The identity of the other apostle of the twelve, traditionally called St. Jude, varies between the Synoptic Gospels and also between ancient manuscripts of each gospel: Mark names him as Thaddaeus; Different manuscripts of Matthew identify him as either Thaddeus or Lebbaeus (some later Latin manuscripts name him "Judas the Zealot", but this is regarded as an unlikely reading); Luke names him as Judas, son of James (translated in the KJV as: "Judas the brother of James" Luke 6:16).

(copied from wikipedia)