| 24 | |
|---|---|
| Season 4 | |
 Promotional poster | |
| Starring | |
| No. of episodes | 24 |
| Release | |
| Original network | Fox |
| Original release | January 9 – May 23, 2005 |
| Season chronology | |
The fourth season of the American drama television series 24, also known as Day 4, premiered on January 9, 2005, on Fox and aired its season finale on May 23, 2005. The season four storyline starts and ends at 7:00 am.