The fourth season of Oz premiered on July 12, 2000 on the premium cable network HBO and concluded on February 25, 2001. It was spread out over 2 parts consisting of 8 episodes each.
| # | Episode | Date of air |
|---|---|---|
| 1 | A Cock and Balls Story | July 12, 2000 |
| 2 | Obituaries | July 19, 2000 |
| 3 | The Bill of Wrongs | July 26, 2000 |
| 4 | Works of Mercy | August 2, 2000 |
| 5 | Gray Matter | August 9, 2000 |
| 6 | A Word to the Wise | August 16, 2000 |
| 7 | A Town Without Pity | August 23, 2000 |
| 8 | You Bet Your Life | August 30, 2000 |
| 9 | Medium Rare | January 7, 2001 |
| 10 | Conversions | January 14, 2001 |
| 11 | Revenge is Sweet | January 21, 2001 |
| 12 | Cuts Like a Knife | January 28, 2001 |
| 13 | Blizzard of '01 | February 4, 2001 |
| 14 | Orpheus Descending | February 11, 2001 |
| 15 | Even the Score | February 18, 2001 |
| 16 | Famous Last Words | February 25, 2001 |