| ADA Casey Novak | |
|---|---|
| Law & Order character | |
 Novak in her last episode "Valentine's Day" | |
| First appearance | October 21, 2003 (episode 5.05: "Serendipity") |
| Last appearance | April 18, 2012 (episode 13.18: "Valentine's Day") |
| Portrayed by | Diane Neal |
| In-universe information | |
| Seasons | 5, 6, 7, 8, 9, 12, 13 |
Casey Novak is a fictional character on Law & Order: Special Victims Unit, portrayed by Diane Neal. She is the only female Assistant District Attorney (ADA) to have appeared in five complete seasons in any Law & Order series and the third-longest-running ADA in the entire franchise.