| Steven Zirnkilton | ... | Opening Announcer / ... (155 episodes, 2001-2008) |
 | Kathryn Erbe | ... | Detective Alexandra Eames / ... (127 episodes, 2001-2008) |
| Vincent D'Onofrio | ... | Detective Robert Goren / ... (125 episodes, 2001-2008) |
| Jamey Sheridan | ... | Captain James Deakins (111 episodes, 2001-2006) |
| Courtney B. Vance | ... | A.D.A. Ron Carver (111 episodes, 2001-2006) |
| Leslie Hendrix | ... | Dr. Elizabeth Rodgers (74 episodes, 2001-2008) |
| Eric Bogosian | ... | Captain Danny Ross / ... (47 episodes, 2006-2008) |
| Chris Noth | ... | Detective Mike Logan / ... (36 episodes, 2005-2008) |
| Julianne Nicholson | ... | Detective Megan Wheeler / ... (20 episodes, 2006-2008) |
| Annabella Sciorra | ... | Detective Carolyn Barek (12 episodes, 2005-2006) |
| Stewart Summers | ... | CSU Tech / ... (9 episodes, 2004-2006) |
| Ean Sheehy | ... | Joshua Simmons / ... (8 episodes, 2004-2008) |
| Alicia Witt | ... | Detective Nola Falacci / ... (7 episodes, 2007-2008) |
| Samantha Buck | ... | Detective G. Lynn Bishop (7 episodes, 2003-2004) |
| Tracey Godfrey | ... | Det. Agnes Farley / ... (7 episodes, 2002-2008) |
| Hudson Cooper | ... | Det. Jefferies / ... (7 episodes, 2005-2008) |
| Geneva Carr | ... | Faith Yancy / ... (6 episodes, 2003-2008) |
| Tracy Howe | ... | Declan / ... (6 episodes, 2001-2002) |
| Olivia d'Abo | ... | Nicole Wallace / ... (5 episodes, 2002-2008) |
| Gary Patent | ... | Ira Whipple (5 episodes, 2006-2008) |
| Joe Gonzalez | ... | Det. Petey / ... (5 episodes, 2002-2007) |
| Robert C. Kirk | ... | Chief of D's Yarrow / ... (5 episodes, 2003-2006) |
| Lynn A. Freedman | ... | CSU Tech Mike / ... (5 episodes, 2007-2008) |
| Seth Gilliam | ... | Det. Daniels / ... (4 episodes, 2007-2008) |
| Mike Pniewski | ... | Chief of Detectives / ... (4 episodes, 2006-2008) |
| Tony Goldwyn | ... | Frank Goren (4 episodes, 2007-2008) |
| Caris Vujcec | ... | Det. Lisa Campesi / ... (4 episodes, 2007-2008) |
| Les McDonough | ... | Court Clerk (4 episodes, 2001-2003) |
| Catrina Ganey | ... | Cashier / ... (4 episodes, 2002-2008) |
| Pete Macnamara | ... | Ass't Medical Examiner / ... (4 episodes, 2003-2004) |
| Carrie Preston | ... | Doreen Whitlock / ... (3 episodes, 2003-2006) |
| Jenna Stern | ... | Janice Steiner / ... (3 episodes, 2002-2007) |
| Daniel Oreskes | ... | Det. Fontanella / ... (3 episodes, 2005-2008) |
| James Murtaugh | ... | Alan Bottner / ... (3 episodes, 2004-2008) |
| Neal Jones | ... | Chief of Detectives Bradshaw (3 episodes, 2006-2007) |
| Geoffrey Cantor | ... | Dukay's Attorney / ... (3 episodes, 2002-2007) |
| Michael Marisi Ornstein | ... | Florist / ... (3 episodes, 2001-2008) |
| Jason Pendergraft | ... | Ian Duffy / ... (3 episodes, 2002-2008) |
| Jim Bracchitta | ... | Arkin / ... (3 episodes, 2001-2005) |
| Rita Moreno | ... | Frances Goren (3 episodes, 2006-2007) |
| Griffin Dunne | ... | Seamus Flaherty / ... (3 episodes, 2001-2007) |
| Steven Randazzo | ... | Evidence Clerk / ... (3 episodes, 2002-2008) |
| Oni Faida Lampley | ... | Eunice Peterson / ... (3 episodes, 2002-2005) |
| A.D. Miles | ... | Zach / ... (3 episodes, 2002-2005) |
| Laura Sametz | ... | Dr. Sheri Jameson / ... (3 episodes, 2003-2008) |
| Dennis Paladino | ... | Det. Steve Grubman / ... (3 episodes, 2001-2006) |
| Chance Kelly | ... | Charlie Hugo / ... (3 episodes, 2002-2006) |
| Christine Farrell | ... | Shrier / ... (3 episodes, 2002-2005) |
| Karen Tsen Lee | ... | Annie Littleton / ... (3 episodes, 2002-2008) |
| Howard W. Overshown | ... | Det. Ozzie Rivera (3 episodes, 2006-2008) |
| Tony Campisi | ... | Bank Manager / ... (3 episodes, 2004-2008) |
| Ernest Mingione | ... | Gino Toniolo / ... (3 episodes, 2002-2008) |
| Shirley Roeca | ... | Angel / ... (3 episodes, 2004-2007) |
| Michal Sinnott | ... | Julie / ... (3 episodes, 2003-2008) |
| Adrian Martinez | ... | Airport Policeman / ... (3 episodes, 2001-2008) |
| Glynis Bell | ... | Judge Anne Mayer / ... (3 episodes, 2004-2006) |
| John Rue | ... | Mr. Taylor / ... (3 episodes, 2004-2007) |
| George R. Sheffey | ... | Bartender / ... (3 episodes, 2005-2008) |
| Pat Murphy | ... | Dawn Condor / ... (3 episodes, 2006-2007) |
| Les J.N. Mau | ... | Mark Shen / ... (3 episodes, 2001-2003) |
| Zachary Knower | ... | Scott Stroll / ... (3 episodes, 2005-2006) |
| John Roney | ... | CSU Detective Dickson / ... (3 episodes, 2001-2004) |
| Lydia Jordan | ... | Charlotte / ... (3 episodes, 2002-2006) |
| Samuel Ray Gates | ... | Det. Becker / ... (3 episodes, 2004-2008) |
| C.S. Lee | ... | Detective Choi / ... (3 episodes, 2004-2006) |
| Robert Levine | ... | Judge Feist (3 episodes, 2001) |
| William H. Burns | ... | Officer Pritchett / ... (3 episodes, 2001-2006) |
| Kevin Alexander | ... | Det. Mertz / ... (3 episodes, 2004-2008) |
| John Fiske | ... | Det. Stegman / ... (3 episodes, 2002-2006) |
| Richard Joseph Paul | ... | Gavin Haynes (3 episodes, 2003-2004) |
| Gio Perez | ... | Diego / ... (3 episodes, 2004-2007) |
| Cornell Womack | ... | Detective Kahn / ... (3 episodes, 2004-2006) |
| Jeff Goldblum | ... | Det. Zach Nichols (3 episodes, 2008) |
| Sonny Vellozzi | ... | Detective / ... (3 episodes, 2005-2006) |
| Tom Stratford | ... | Burn Victim / ... (3 episodes, 2006-2008) |
| Peter Conboy | ... | Computer Tec / ... (3 episodes, 2006-2007) |
| Rebecca Merle | ... | College Student / ... (3 episodes, 2006-2007) |
| Theresa Randle | ... | A.D.A. Patricia Kent (2 episodes, 2006) |
| Michael O'Keefe | ... | Dr. Eli Rush / ... (2 episodes, 2001-2007) |
| Lee Tergesen | ... | Josh Lemle / ... (2 episodes, 2003-2007) |
| Geoffrey Nauffts | ... | Brendan Keele / ... (2 episodes, 2001-2006) |
| Mark Linn-Baker | ... | Wally Stevens (2 episodes, 2003-2007) |
| Kathleen Chalfant | ... | Bessie Holland / ... (2 episodes, 2001-2007) |
| J. Smith-Cameron | ... | Miss Hill / ... (2 episodes, 2001-2007) |
| Thomas G. Waites | ... | Lance Brody / ... (2 episodes, 2001-2003) |
| Jim Gaffigan | ... | Marty Palin / ... (2 episodes, 2002-2007) |
| Robert Clohessy | ... | Lt. Roger Lemoyne / ... (2 episodes, 2002-2006) |
| Pablo Schreiber | ... | Ed Lang / ... (2 episodes, 2005-2007) |
| Dana Wheeler-Nicholson | ... | Hilary Marsden / ... (2 episodes, 2006-2008) |
| Eric Thal | ... | Denis Dupont / ... (2 episodes, 2001-2006) |
| Holt McCallany | ... | Detective Patrick Copa / ... (2 episodes, 2007-2008) |
| Linda Gehringer | ... | Innkeeper / ... (2 episodes, 2001-2008) |
| Susan Misner | ... | Becky Stark / ... (2 episodes, 2001-2005) |
| James Colby | ... | Bouncer / ... (2 episodes, 2002-2008) |
| Ned Eisenberg | ... | Artie Ableson / ... (2 episodes, 2002-2007) |
| Bruce MacVittie | ... | Arnie Cox / ... (2 episodes, 2002-2007) |
| Carlos Leon | ... | Enrique Zuella / ... (2 episodes, 2002-2006) |
| Damian Young | ... | Boaz / ... (2 episodes, 2002-2005) |
| Fred Weller | ... | Dale Mullen / ... (2 episodes, 2004-2007) |
| Molly Gottlieb | ... | Gwen Chapel (2 episodes, 2005-2008) |
| Kelly Deadmon | ... | Charlotte's Friend / ... (2 episodes, 2002-2008) |
| Marsha Dietlein | ... | Laura Carlson / ... (2 episodes, 2002-2006) |
| Josh Pais | ... | Noah Brezner / ... (2 episodes, 2003-2007) |
| Tom Riis Farrell | ... | Rev. Douglas Callaway / ... (2 episodes, 2004-2006) |
| John Shea | ... | Mr. Walker / ... (2 episodes, 2005-2008) |
| Michael Rispoli | ... | Frank Adair (2 episodes, 2005-2006) |
| Colm Meaney | ... | Judge Harold Garrett (2 episodes, 2005) |
| Peter Appel | ... | Dr. Holgreen / ... (2 episodes, 2002-2007) |
| Michael Nouri | ... | Elder Roberts / ... (2 episodes, 2003-2007) |
| Mark Blum | ... | Dr. Philip Oliver / ... (2 episodes, 2003-2006) |
| Kevin Geer | ... | Detective / ... (2 episodes, 2004-2005) |
| Caprice Benedetti | ... | Irene / ... (2 episodes, 2001-2007) |
| Barbara Garrick | ... | Jennifer Barish / ... (2 episodes, 2001-2006) |
| Joseph Siravo | ... | Joe Narocki / ... (2 episodes, 2001-2006) |
| Scott Sowers | ... | Joel / ... (2 episodes, 2002-2008) |
| Jack Koenig | ... | Attorney Javits / ... (2 episodes, 2002-2006) |
| Florencia Lozano | ... | Octavia Ruiz / ... (2 episodes, 2003-2007) |
| Charles Borland | ... | FBI Agent Frank Billings / ... (2 episodes, 2005-2007) |
| Matt O'Leary | ... | Ethan Garrett (2 episodes, 2005) |
| Peter Maloney | ... | Teddy Mercer (2 episodes, 2001-2006) |
| Robert Hogan | ... | Ferdie / ... (2 episodes, 2001-2003) |
| Terry Serpico | ... | Earl Carnicki / ... (2 episodes, 2001-2003) |
| Reathel Bean | ... | Joe Edwards / ... (2 episodes, 2002) |
| Fisher Stevens | ... | Gareth Sage / ... (2 episodes, 2004-2007) |
| Kristin Rohde | ... | Doris Mitchell / ... (2 episodes, 2004-2006) |
| Yolonda Ross | ... | Patricia / ... (2 episodes, 2005-2007) |
| Jana Robbins | ... | Ambassador Conington / ... (2 episodes, 2005-2006) |
| Bridget Regan | ... | ADA Claudia Shankly / ... (2 episodes, 2006-2007) |
| Brian Letscher | ... | Diego / ... (2 episodes, 2007-2008) |
| Todd Weeks | ... | Agent Corbett (2 episodes, 2007-2008) |
| Jayce Bartok | ... | Michael Carson / ... (2 episodes, 2001-2006) |
| Matt Servitto | ... | Derek Freed / ... (2 episodes, 2001-2005) |
| Tom Bloom | ... | Bernard Jackson / ... (2 episodes, 2001-2004) |
| Leslie Lyles | ... | Mrs. Hagman / ... (2 episodes, 2002-2007) |
| Elizabeth Reaser | ... | Jillian Slaughter / ... (2 episodes, 2002-2006) |
| Reed Birney | ... | A.D.A. Stillman / ... (2 episodes, 2002-2005) |
| Ken Cheeseman | ... | Dr. Anthony Clayton / ... (2 episodes, 2003-2006) |
| Alex Burns | ... | Joshua Mailer / ... (2 episodes, 2005-2007) |
| Lucinda Jenney | ... | Elise Garrett (2 episodes, 2005) |
| Angel Desai | ... | Nikki Ushima (2 episodes, 2006-2008) |
| William Hill | ... | Bobby Grey / ... (2 episodes, 2001-2007) |
| David Chandler | ... | Matthew (2 episodes, 2001-2006) |
| Elizabeth Marvel | ... | Jenny Hendry / ... (2 episodes, 2001-2005) |
| Phoebe Jonas | ... | Barbara Lee / ... (2 episodes, 2002-2007) |
| John Bolger | ... | FBI Agent O'Dell / ... (2 episodes, 2002-2006) |
| Alison Bartlett | ... | Allison Dean / ... (2 episodes, 2002-2005) |
| Jordan Gelber | ... | Arnold Pierce / ... (2 episodes, 2002-2005) |
| Phyllis Somerville | ... | Louise Politano / ... (2 episodes, 2002-2004) |
| Billy Lush | ... | Conroy 'Connie' Smith (2 episodes, 2003-2005) |
| Frank Santorelli | ... | Detective on Scene / ... (2 episodes, 2003-2005) |
| Beth Dixon | ... | Bridie / ... (2 episodes, 2004-2007) |
| Kate Blumberg | ... | Kiera / ... (2 episodes, 2006-2008) |
| Rocco Sisto | ... | Commissioner Fahey / ... (2 episodes, 2006) |
| Dan Ziskie | ... | John Lucas (2 episodes, 2002-2007) |
| Dashiell Eaves | ... | Jamie Royce / ... (2 episodes, 2002-2006) |
| Harvey Atkin | ... | Judge Alan Ridenour (2 episodes, 2002-2005) |
| Tibor Feldman | ... | Dr. Jacoby / ... (2 episodes, 2003-2008) |
| Lee R. Sellars | ... | Lenny Dupar / ... (2 episodes, 2003-2006) |
| Michael Genet | ... | Brent's Attorney / ... (2 episodes, 2003) |
| Brian Haley | ... | Barry Carlson / ... (2 episodes, 2004-2008) |
| David Wilson Barnes | ... | Abe McVee / ... (2 episodes, 2004-2007) |
| Jay Patterson | ... | Benton Williams / ... (2 episodes, 2004-2006) |
| Peter Bogdanovich | ... | George Merritt (2 episodes, 2005-2007) |
| Madhur Jaffrey | ... | Mrs. Khan / ... (2 episodes, 2006-2008) |
| Chris McKinney | ... | Det. Carrera / ... (2 episodes, 2006-2008) |
| Stephen Beach | ... | Billy Coffey / ... (2 episodes, 2001-2007) |
| Lynn Cohen | ... | Anna Ansel / ... (2 episodes, 2001-2005) |
| Felix Solis | ... | Cardenas / ... (2 episodes, 2002-2007) |
| Keith Randolph Smith | ... | Jailhouse Attorney / ... (2 episodes, 2002-2006) |
| Christine Jones | ... | Laura Dietrich / ... (2 episodes, 2002-2003) |
| Michael Mastro | ... | Hymie / ... (2 episodes, 2003-2006) |
| Anya Migdal | ... | Mona Manotti / ... (2 episodes, 2004-2008) |
| Gerry Becker | ... | Attorney Cleveland / ... (2 episodes, 2004-2005) |
| Jeff Biehl | ... | Brad Wycliff / ... (2 episodes, 2005-2008) |
| John Glover | ... | Dr. Declan Gage (2 episodes, 2006-2008) |
| Donna Mitchell | ... | Mindy Blackstone / ... (2 episodes, 2001-2006) |
| Louis Vanaria | ... | Frist / ... (2 episodes, 2001-2006) |
| Greg Zittel | | (2 episodes, 2001-2004) |
| Gene Canfield | ... | Detective Cardenas (2 episodes, 2001) |
| Andre Royo | ... | Luther Pinkston / ... (2 episodes, 2002-2007) |
| Peter Bradbury | ... | Duane Forester / ... (2 episodes, 2004-2007) |
| Rufus Collins | ... | Neil McClintock / ... (2 episodes, 2004-2006) |
| Jonathan Cake | ... | Colin / ... (2 episodes, 2008) |
| Kevin Breznahan | ... | Lewis (2 episodes, 2001-2003) |
| Charlotte Booker | ... | Ellen / ... (2 episodes, 2002-2004) |
| Tom Stechschulte | ... | Frank Wagner / ... (2 episodes, 2002-2004) |
| Marin Ireland | ... | Anais Hutchinson / ... (2 episodes, 2003-2006) |
| David Dollase | ... | ADA Stefan Calos (2 episodes, 2003-2005) |
| Kristin Griffith | ... | Mrs. Norman / ... (2 episodes, 2004-2008) |
| Kathleen McNenny | ... | Mrs. Lunden (2 episodes, 2005) |
| Helen Coxe | ... | Claris Randolph / ... (2 episodes, 2006-2007) |
| Stephanie Roth Haberle | ... | Mrs. Berkowitz / ... (2 episodes, 2001-2005) |
| John Viscardi | ... | Barry Cooper / ... (2 episodes, 2003-2007) |
| Carrie Yaeger | ... | Helen Combs / ... (2 episodes, 2004-2007) |
| Leslie Hope | ... | Terri Driver (2 episodes, 2008) |
| Margaret Reed | ... | Allison Selwyn / ... (2 episodes, 2002-2006) |
| Philip Levy | ... | Kev Gustav / ... (2 episodes, 2002-2005) |
| Teagle F. Bougere | ... | Campbell / ... (2 episodes, 2003-2007) |
| Rafael Sardina | ... | Dr. Manny Beltran / ... (2 episodes, 2003-2007) |
| Cortez Nance Jr. | ... | DA Investigator Gates / ... (2 episodes, 2004-2007) |
| Kate Skinner | ... | Joyce Brandt / ... (2 episodes, 2004-2006) |
| Adam Heller | ... | Jack Engles / ... (2 episodes, 2005-2007) |
| Peter Y. Kim | ... | Hyo / ... (2 episodes, 2005-2007) |
| Remy Auberjonois | ... | Dr. Jay Alberstein / ... (2 episodes, 2006-2007) |
| Ilana Levine | ... | Evelyn Carlson / ... (2 episodes, 2002-2008) |
| Selenis Leyva | ... | Isabella Costas / ... (2 episodes, 2002-2005) |
| Doug Barron | ... | Hamilton Frisch / ... (2 episodes, 2002-2004) |
| Gibson Frazier | ... | Jimmy Connelly / ... (2 episodes, 2003-2006) |
| Colleen Clinton | ... | Charlotte Kappel / ... (2 episodes, 2003-2005) |
| Linda Powell | ... | Ms. Ramone / ... (2 episodes, 2004-2006) |
| Barbara Andres | ... | Judith Worley / ... (2 episodes, 2004-2005) |
| Maulik Pancholy | ... | Aziz Gabriel / ... (2 episodes, 2005-2007) |
| James Biberi | ... | Al Petrosino / ... (2 episodes, 2006-2008) |
| Cullen O. Johnson | ... | Mike Vanston / ... (2 episodes, 2001-2005) |
| Pamela Gray | ... | Maryann Foster / ... (2 episodes, 2001-2004) |
| Isiah Whitlock Jr. | ... | Detective (2 episodes, 2001) |
| Michael Hobbs | ... | Dennis Coburn / ... (2 episodes, 2002-2005) |
| Meredith Zinner | ... | Cathy Miller / ... (2 episodes, 2003-2007) |
| Emilio Delgado | ... | Ari Hernandez / ... (2 episodes, 2004-2007) |
| Kris Eivers | ... | Floyd / ... (2 episodes, 2005-2007) |
| Julienne Hanzelka Kim | ... | Amanda Hsin / ... (2 episodes, 2006-2008) |
| Angel Caban | ... | Ivan Casamayor / ... (2 episodes, 2001-2004) |
| Marisa Redanty | ... | Elizabeth Carr / ... (2 episodes, 2002-2006) |
| Jordan Lage | ... | John Littleton / ... (2 episodes, 2002-2005) |
| Bill Cwikowski | ... | Det. Danny Dougherty / ... (2 episodes, 2003-2005) |
| Don Sparks | ... | Air Traffic Control Agent #1 / ... (2 episodes, 2006-2007) |
| Ron Simons | ... | Detective Willis / ... (2 episodes, 2007) |
| Anne L. Nathan | ... | Dr. Stern / ... (2 episodes, 2003-2007) |
| E.J. Carroll | ... | Desmond McCarthy / ... (2 episodes, 2003-2006) |
| Lou Martini Jr. | ... | Det. Yaro / ... (2 episodes, 2003-2006) |
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