Genesis, written by Moses
Exodus, written by Moses
Leviticus, written by Moses
Numbers, written by Moses
Deuteronomy, written by Moses
Joshua, written by Joshua (except the parts relating to his death)
Judges, written by Samuel, Nathan, Gad
Ruth, written by Samuel, Nathan, Gad
1 Samuel, written by Samuel, Nathan, Gad
2 Samuel, written by Samuel, Nathan, Gad
1 Kings, written by Jeremiah
2 Kings, written by Jeremiah
1 Chronicles, written by Ezra
2 Chronicles, written by Ezra
Ezra, written by Ezra
Nehemiah, written by Nehemiah, Ezra
Esther, written by Mordecai: It is probable that the book was compiled after his death based on his personal records
Job, written by Job: Moses may have compiled the book based on Job’s records
Psalms, written by David, and several others including Asaph, Ezra, the sons of Korah, Heman, Ethan, Moses and a host of unnamed authors
Proverbs, written by Solomon: Agur and Lemuel are specifically named as the writers of Proverbs 30 and 31
Ecclesiastes, written by Solomon
Song of Solomon (also known as, Song of Songs or Canticles), written by Solomon: though this is debated
Isaiah, written by Isaiah
Jeremiah, written by Jeremiah
Lamentations, written by Jeremiah
Ezekiel, written by Ezekiel
Daniel, written by Daniel
Hosea, written by Hosea
Joel, written by Joel
Amos, written by Amos
Obadiah, written by Obadiah
Jonah, written by Jonah
Micah, written by Micah
Nahum, written by Nahum
Habakkuk, written by Habakkuk
Zephaniah, written by Zephaniah
Haggai, written by Haggai
Zechariah, written by Zechariah
Malachi, written by Malachi
New Testament
Matthew, written by Matthew
Mark, written by John Mark
Luke, written by Luke
John, written by John, the Apostle
Acts, written by Luke
Pauline Epistles
Romans, written by Paul
1 Corinthians, written by Paul
2 Corinthians, written by Paul
Galatians, written by Paul
Ephesians, written by Paul
Philippians, written by Paul
Colossians, written by Paul
1 Thessalonians, written by Paul
2 Thessalonians, written by Paul
1 Timothy, written by Paul
2 Timothy, written by Paul
Titus, written by Paul
Philemon, written by Paul
Hebrews, written by Paul, Luke, Barnabas, Apollos
James, written by James: there are several men named James who could have been the author. Most scholars say this is James the brother of Jesus and Jude (not the Apostle, brother of John).
1 Peter, written by Peter
2 Peter, written by Peter
1 John, written by John, the Apostle
2 John, written by John, the Apostle
3 John, written by John, the Apostle
Jude, written by Jude, the brother of Jesus and James, not the Apostle (Jude 17)
Revelation, written by John, the Apostle