ER season 4

ER
Season 4
DVD cover
Starring	Anthony Edwards George Clooney Noah Wyle Julianna Margulies Gloria Reuben Laura Innes Maria Bello Alex Kingston Eriq La Salle
No. of episodes	22
Release
Original network	NBC
Original release	September 25, 1997 (1997-09-25) – May 14, 1998 (1998-05-14)
Season chronology
← Previous Season 3 Next → Season 5
List of episodes

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.