ER season 4
| ER | |
|---|---|
| Season 4 | |
DVD cover | |
| Starring | |
| No. of episodes | 22 |
| Release | |
| Original network | NBC |
| Original release | September 25, 1997 – May 14, 1998 |
| Season chronology | |
The fourth season of the American fictional drama television series ER first aired on September 25, 1997, and concluded on May 14, 1998. The fourth season consists of 22 episodes.