12 disciples as listed in the Gospels and Acts

Lists of the twelve disciples are found in all three synoptic Gospels and in Acts (the 11) as follows

Matthew 10:2-4

These are the names of the twelve apostles:

first, Simon (who is called Peter) and his brother Andrew; James son of Zebedee, and his brother John; 

Philip and Bartholomew; Thomas and Matthew the tax collector; James son of Alphaeus, and Thaddaeus; Simon the Zealot and Judas Iscariot, who betrayed him.

Mark 3:13-19

Jesus went up on a mountainside and called to him those he wanted, and they came to him. He appointed twelve that they might be with him and that he might send them out to preach  and to have authority to drive out demons. These are the twelve he appointed:

Simon (to whom he gave the name Peter), James son of Zebedee and his brother John (to them he gave the name Boanerges, which means "sons of thunder"),

Andrew, Philip, Bartholomew, Matthew, Thomas,

James son of Alphaeus, Thaddaeus, Simon the Zealot and Judas Iscariot, who betrayed him.

Luke 6:12-16

One of those days Jesus went out to a mountainside to pray, and spent the night praying to God. When morning came, he called his disciples to him and chose twelve of them, whom he also designated apostles: 

Simon (whom he named Peter), his brother Andrew, James, John,

Philip, Bartholomew, Matthew, Thomas,

James son of Alphaeus, Simon who was called the Zealot, Judas son of James, and Judas Iscariot, who became a traitor.

Acts 1:13

When they arrived, they went upstairs to the room where they were staying. Those present were

Peter, John, James and Andrew;

Philip and Thomas, Bartholomew and Matthew;

James son of Alphaeus and Simon the Zealot, and Judas son of James.

Definitively

Simon (who Jesus nicknamed Peter) and his brother Andrew; James son of Zebedee, and his brother John;

Philip and Bartholomew (called Nathanael in John); Thomas and Matthew the tax collector (also known as Levi);

James son of Alphaeus, and Thaddaeus (also known as Judas son of James); Simon the Zealot and Judas Iscariot, who betrayed him.