| "Subject 9" | |
|---|---|
| Fringe episode | |
| Episode no. | Season 4 Episode 4 |
| Directed by | Joe Chappelle |
| Written by | Jeff Pinkner J. H. Wyman Akiva Goldsman |
| Production code | 3X7004 |
| Original air date | October 14, 2011 |
| Guest appearances | |
| |
"Subject 9" is the fourth episode of the fourth season of the Fox science fiction drama television series Fringe, and the series' 69th episode overall.
It was co-written by J. H. Wyman, Akiva Goldsman, and Jeff Pinkner. Joe Chappelle directed the hour.