The ninth season of NYPD Blue premiered on ABC on November 6, 2001, and concluded on May 21, 2002.
| NYPD Blue | |
|---|---|
| Season 9 | |
 Season 9 U.S. DVD Cover | |
| No. of episodes | 22 |
| Release | |
| Original network | ABC |
| Original release | November 6, 2001 – May 21, 2002 |
| Season chronology | |
| Actor | Character | Main cast | Recurring cast |
|---|---|---|---|
| Dennis Franz | Andy Sipowicz | entire season | — |
| Mark-Paul Gosselaar | John Clark, Jr. | entire season | — |
| Gordon Clapp | Greg Medavoy | entire season | — |
| Bill Brochtrup | John Irvin | entire season | — |
| Henry Simmons | Baldwin Jones | entire season | — |
| Garcelle Beauvais | Valerie Haywood | entire season | — |
| Charlotte Ross | Connie McDowell | entire season | — |
| Esai Morales | Tony Rodriguez | entire season | — |
| Jacqueline Obradors | Rita Ortiz | episodes 8-23 | — |
| John F. O'Donohue | Eddie Gibson | — | episodes 3-8,10,16 |