| Name | Date(s) | Notes |
| Jackie Aaron | 02/24/03; 05/28/03 | Wife of Andy Aaron; New York Week; Zero Winners Week (missed Q4) |
| Ellen Abernathy | 03/04-05/04 | |
| Carla Ainsworth | 04/15-16/04 | |
| Madeleine Ali | 04/23-24/03 | Won $320,000 on "Greed", $10,000 on "Pyramid", $1,250 on "Camouflage", and $50,000 on "Million Dollar Password" |
| Catherine Allen | 10/07/03 | |
| Jeani Allen | 04/09/04 | |
| Joey Arnel-Sayson | 10/21-22/02 | |
| Phil Barth | 06/27-07/07/03 | |
| Janet Batek | 01/16-17/03 | |
| Sheila Bayne | 11/25/03 | |
| Harvey Becker | 01/08-09/03 | Won $55,400 on "Jeopardy!" |
| Liz Bello | 01/23/04 | |
| Patty Binns | 10/22/02 | |
| Peter Bonner | 09/17/02 | Phoned Leszek Pawlowicz; Shannon Ross' PAF |
| Karin Botica | 04/22-23/03 | |
| Shirlee Bowden | 01/30/03 | |
| Rachel Brekke | 03/07-10/03 | Wife of Daniel Brekke |
| Art Brown | 05/14/04 | |
| Lydia Burnett | 04/27/04 | |
| Ashton Byrum | 02/26/04 | Remember the '90s Week |
| Delia Caracappa | 11/07/02 | |
| Frank Chang | 11/01/02 | Radio Week |
| Valerie Cobb | 11/18/02 | |
| Scott Colburn | 01/17/03 | |
| Lindsay Colegrove | 07/14/03 | |
| John Coley | 01/13/03 | |
| Jill Collinson | 05/11-12/04 | Lost $93,000 |
| Tom Condosta | 03/04-05/03 | |
| Adam Cooper | 05/03-04/04 | |
| Jonathan Corbblah | 07/23/04 | Won $14,000 on "Jeopardy!" |
| John Corbett | 01/09/03; 05/23-26/03 | Son of Rita Corbett; Zero Winners Week (missed Q4); Phoned Steve Silver |
| Sabrina Crow | 03/24-25/04 | |
| Don Cunningham | 10/03/03 | |
| Kathleen Daly | 05/06/04 | |
| Ruth Darcy | 10/20/03 | |
| Ian Davies | 04/29/04 | |
| Steve Diamant | 11/20/03 | Celebrity Scoop Week I |
| Laura Ditri | 07/08-09/04 | |
| Tim Donnelly | 04/07-08/04 | |
| Tim Dreher | 01/31/03 | |
| Richard Drinkwater | 04/02-05/04 | |
| Bernie Dyer | 04/09/03 | |
| Bob Edgeworth | 10/24-25/02 | Won $10,000+ and a car on "Wheel of Fortune"; Lost $218,000 |
| Gary Esposito | 09/25-26/03 | |
| Sarah "Dixie" Feldman | 10/01-02/02 | |
| Tara Flynn-Rozanski | 02/20/04 | |
| Linda Frigiola | 06/07-08/04 | |
| Kristen Fuhs | 04/16-19/04 | |
| Cara Galloway | 01/15-16/03 | |
| Sharlyne Galloway | 11/04/03 | Walk In & Win Week I |
| Greg Garbee | 02/02-03/04 | Lost $93,000 |
| Linda Gaudenti | 05/10-11/04 | |
| Mattie Germer | 02/05/03 | College Week I |
| Diane Giordano | 07/06-07/04 | |
| Donn Gladish | 03/14/03 | |
| Merle Glickman | 06/12/03 | |
| Russell Golden | 06/26/03 | |
| Kermit Goree | 02/11/03 | |
| Daniel Greenblatt | 04/01/03 | 1984 Scripps National Spelling Bee champion |
| Brittney Hancock | 03/22/04 | |
| Janet Hansen | 02/02/04 | |
| Julie Harman | 01/29/03 | |
| Paul Hebert | 02/12/04 | College Week II |
| Erin Hill | 05/06-07/04 | |
| Pamela Hirsch | 07/12/04 | |
| Darold Holloway | 02/28/03 | New York Week |
| Terry & Tyrene House | 02/20-21/03 | Twins Week |
| Julia Hudnall | 11/13-14/02 | |
| Carolyn Johnson | 09/20/02 | |
| Freddie Johnson | 02/24/03 | New York Week |
| Carla Jones | 03/13-14/03 | |
| Tiffany Jones | 09/15-16/03 | |
| Linda Kaminsky | 03/10-11/03 | |
| Ed Kamposek | 11/26/02 | |
| Stephen Kamsler | 12/10/03 | |
| Jason Key | 04/14/04 | |
| Mark Klein | 11/26-27/02 | |
| Amy Kobrzynski | 01/19-20/04 | |
| Ed Koelln | 02/16-17/04 | |
| Audrey Kuenstler | 06/16-17/04 | |
| Dave Kuschel | 11/11-12/02 | Phoned Frank Tangredi |
| Tim Levine | 02/17/04 | |
| Andrea Levinson | 03/30-31/04 | |
| Ira Levy | 10/14/03 | |
| Lance Linsell | 04/08/03 | |
| Christina MacKinnon | 04/19-20/04 | |
| Shaun Madding | 12/20/02-01/06/03 | |
| Manny Magno | 12/01/03 | |
| Josh Magri | 01/15/03 | |
| Alex Makarewicz | 02/25/04 | Remember the '90s Week |
| Sean Manning | 06/19-20/03 | Lost $93,000 |
| T.J. Mannis | 10/15/03 | |
| Rod Martin | 06/13-16/03 | Calvin Carrier's PAF; Lost $218,000 |
| Rebecca McGee | 06/18/03 | |
| Jacqui McGugins | 02/05/04 | |
| Brian McManus | 05/14-15/03 | |
| Russ McSwain | 01/15/04 | |
| Brian Meyer | 11/14-15/02 | |
| Mike Michalakis | 09/17/03 | |
| Andre Middleton | 10/22-23/03 | |
| Rebecca Minnick | 01/08/03 | |
| Paul Moore | 04/03/03; 05/21-22/03 | Zero Winners Week (missed Q5) |
| Liz Myszka | 12/16-17/02 | |
| Valri Nesbit | 01/22/03 | |
| Barbara Noyes | 04/27-28/04 | Mother of Denise Noyes; Won $2,000 on "Jeopardy!" |
| Holly Oakes | 10/28/03 | |
| Young Ok Sin | 06/20/03 | |
| Abby Pickens | 02/07/03 | College Week I |
| Deidra Plummer | 10/13/03 | |
| Jeff Poynor | 11/18/02 | |
| Lisa Preston | 02/19-20/04 | |
| Carrie Pruett | 01/13-14/03 | |
| Lance Randall | 12/05-06/02 | |
| Roger Reaves | 01/28/03 | |
| Mike Repko | 11/26/03 | |
| Sue Riolo | 07/13-14/04 | |
| Jennifer Russell | 12/09/03 | |
| Ray Sarvis | 06/20-23/03 | |
| Becky Schmidt | 04/17-18/03 | |
| Mickey Schuman | 09/29/03 | |
| Father Mike Sciumbato | 04/16-17/03; 05/19-20/04 | (see below) |
| Jim Sefcik | 12/19-20/02 | |
| Ida Shapiro | 10/30-31/03 | |
| Rod Shelby | 01/16-19/04 | |
| Alan Shia | 05/28/04 | |
| John Shoemaker | 05/13/03 | |
| Mike Silverberg | 05/24-25/04 | |
| Joel Simeone | 12/11/02 | |
| Lou Simon | 10/17-18/02 | |
| Joel Simeone | 12/11/02 | |
| Rebecca Sinderbrand | 04/12-13/04 | |
| Vicki Six | 04/23/04 | |
| Stacy Smith-Velez | 11/11/03 | |
| Lou Solomon | 05/25/04 | |
| Michael Souveroff | 11/22-25/02 | |
| June Stapleton Hess | 06/17/03 | Phoned Bob Shore |
| Courtney Stevens | 12/12-13/02 | |
| Julianna Suchard | 04/08-09/04 | Weldon Pettway, Jr.'s, PAF; Won $1,000 on "Jeopardy!"; (see below) |
| Daniel Swartz | 11/21/02 | Lost $93,000 |
| Eric Taylor | 04/10/03 | |
| Scott Tennant | 01/30-31/03 | |
| Ray Thomas | 07/15/03 | Lost $93,000 |
| Dick Thurnston | 06/11-12/03 | |
| Cliff Townsend | 10/17/03 | |
| J. Van Amburgh | 04/11-14/03 | Lost $93,000 |
| Rene Villegas | 11/25-26/03 | |
| Barbara Vollick | 01/22-23/03 | |
| Mark Volmer | 04/21-22/03 | |
| Michael Walker | 02/10/03 | |
| Mary Jane Warden | 07/09-12/04 | |
| Robyn Weiss-Jimenez | 01/23-26/04 | |
| Lisa Westervelt | 11/19-20/03 | Celebrity Scoop Week I |
| Rob Witsoe | 02/12/03 | |
| Jack Wood | 04/30-05/01/03 | |
| Diane Wukitsch | 12/18/02 | |
| Dennis Yang | 11/21-22/02 | |
| Jeff Yap | 05/29/03 | |
| Thom Zahler | 04/25/03 | |
| Tina Zarro | 10/23/02 |
Footnotes:
--Sciumbato's 04/17/03 appearance was cut short by incorrectly answering a flawed $8,000 question. The producers later determined that his answer was acceptable, so they brought him back a year later.
--Suchard's 04/09/04 appearance was cut short by incorrectly answering a flawed $64,000 question. The producers later determined that her answer was acceptable, so they brought her back a year later. Her winnings did not change as she failed to answer her new $64,000 question correctly. Her return segment never aired.
