 | Nigel Lythgoe | ... | Himself - Judge (110 episodes, 2005-2009) |
 | Cat Deeley | ... | Herself - Host / ... (109 episodes, 2005-2009) |

| Mary Murphy | ... | Herself - Judge / ... (109 episodes, 2005-2009) |
 | Mia Michaels | ... | Herself - Guest Judge / ... (32 episodes, 2005-2009) |
 | Adam Shankman | ... | Himself - Judge / ... (30 episodes, 2007-2009) |
 | Tyce Diorio | ... | Himself - Choreographer / ... (23 episodes, 2006-2009) |
 | Stephen Boss | ... | Himself (21 episodes, 2007-2009) |
 | Katee Shean | ... | Herself / ... (21 episodes, 2008-2009) |

| Shane Sparks | ... | Himself / ... (20 episodes, 2005-2009) |

| Lauren Gottlieb | ... | Herself / ... (20 episodes, 2007-2009) |
 | Lacey Schwimmer | ... | Herself / ... (20 episodes, 2007-2008) |
 | Pasha Kovalev | ... | Himself / ... (19 episodes, 2007-2009) |

| Neil Haskell | ... | Himself (19 episodes, 2007) |
 | Joshua Allen | ... | Himself / ... (19 episodes, 2008-2009) |
 | Brandon Bryant | ... | Himself (19 episodes, 2008-2009) |
 | Napolean D'Umo | ... | Himself - Choreographer / ... (19 episodes, 2008-2009) |
 | Tabitha D'Umo | ... | Herself - Choreographer / ... (19 episodes, 2008-2009) |
 | Courtney Galiano | ... | Herself (19 episodes, 2008) |
 | Dominic Sandoval | ... | Himself / ... (18 episodes, 2007-2009) |
 | Sabra Johnson | ... | Herself (18 episodes, 2007) |
 | Danny Tidwell | ... | Himself (18 episodes, 2007) |
 | Chelsie Hightower | ... | Herself (18 episodes, 2008-2009) |

| Evan Kasprzak | ... | Himself (18 episodes, 2009) |

| Jeanine Mason | ... | Herself (18 episodes, 2009) |
 | Kayla Radomski | ... | Herself (18 episodes, 2009) |
 | Sara Von Gillern | ... | Herself / ... (17 episodes, 2007-2008) |
 | Mark Kanemura | ... | Himself (17 episodes, 2008-2009) |
 | Ade Obayomi | ... | Himself (17 episodes, 2009) |
 | Melissa Sandvig | ... | Herself (17 episodes, 2009) |
 | Mandy Moore | ... | Choreographer / ... (16 episodes, 2007-2009) |
 | Ashleigh De Llelo | ... | Herself / ... (15 episodes, 2009) |
 | Ryan De Llelo | ... | Himself / ... (15 episodes, 2009) |
 | Russell Ferguson | ... | Himself / ... (15 episodes, 2009) |
 | Jakob Karr | ... | Himself / ... (15 episodes, 2009) |
 | Kathryn McCormick | ... | Herself / ... (15 episodes, 2009) |
 | Ellenore Scott | ... | Herself / ... (15 episodes, 2009) |
 | Jaimie Goodwin | ... | Herself (15 episodes, 2007-2009) |
 | Tony Meredith | ... | Himself - Choreographer / ... (15 episodes, 2007-2009) |
 | Comfort Fedoke | ... | Herself / ... (15 episodes, 2008-2009) |
 | Jason Glover | ... | Himself (15 episodes, 2009) |
 | Janette Manrara | ... | Herself (15 episodes, 2009) |
 | Anya Garnis | ... | Herself / ... (14 episodes, 2007-2009) |
 | Hokuto 'Hok' Konishi | ... | Himself / ... (14 episodes, 2007-2009) |
 | William Wingfield | ... | Himself (14 episodes, 2008) |
 | Mollee Gray | ... | Herself (14 episodes, 2009) |

| Jonathan 'Legacy' Perez | ... | Himself (14 episodes, 2009) |
 | Dmitry Chaplin | ... | Himself / ... (13 episodes, 2005-2008) |
 | Kameron Bink | ... | Himself (13 episodes, 2007) |
 | Jessica King | ... | Herself (13 episodes, 2008-2009) |

| Kherington Payne | ... | Herself (13 episodes, 2008-2009) |
 | Kupono Aweau | ... | Himself (13 episodes, 2009) |
 | Randi Evans | ... | Herself (13 episodes, 2009) |

| Daniel Karaty | ... | Himself - Guest Judge / ... (12 episodes, 2005-2008) |
 | Wade Robson | ... | Himself - Choreographer / ... (12 episodes, 2006-2009) |
 | Gevorg Manoukian | ... | Himself (12 episodes, 2008) |
 | Noelle Marsh | ... | Herself (12 episodes, 2009) |
 | Nathan Trasoras | ... | Himself (12 episodes, 2009) |
 | Travis Wall | ... | Himself / ... (11 episodes, 2006-2009) |

| Debbie Allen | ... | Herself - Guest Judge / ... (11 episodes, 2007-2009) |
 | Melanie LaPatin | ... | Herself - Choreographer / ... (11 episodes, 2007-2009) |
 | Cedric Gardner | ... | Himself / ... (11 episodes, 2007-2008) |
 | Phillip Chbeeb | ... | Himself (11 episodes, 2009) |
 | Caitlin Kinney | ... | Herself (11 episodes, 2009) |
 | Christopher Toler | ... | Himself - Guest Judge / ... (10 episodes, 2008-2009) |
 | Shauna Noland | ... | Herself (10 episodes, 2007) |
 | Sonya Tayeh | ... | Herself - Choreographer / ... (10 episodes, 2008-2009) |
 | Thayne Jasperson | | (10 episodes, 2008) |
 | Karen Hauer | ... | Herself (10 episodes, 2009) |
 | Victor Smalley | ... | Himself (10 episodes, 2009) |
 | Blake McGrath | ... | Himself - Contestant / ... (9 episodes, 2005-2008) |

| Benji Schwimmer | ... | Himself / ... (9 episodes, 2006-2008) |
 | Jesus Solorio | ... | Himself / ... (9 episodes, 2007-2008) |
 | Karla Garcia | ... | Herself (9 episodes, 2009) |
 | Vitolio Jeune | ... | Himself (9 episodes, 2009) |

| Brian Friedman | ... | Himself - Choreographer / ... (8 episodes, 2005-2009) |
 | Nick Lazzarini | ... | Himself - Contestant / ... (8 episodes, 2005-2006) |
 | Heidi Groskreutz-Burns | ... | Herself / ... (8 episodes, 2006-2009) |
 | Jessi Peralta | ... | Herself (8 episodes, 2007) |
 | Matthew Dorame | ... | Himself (8 episodes, 2008) |
 | Kourtni Lind | ... | Herself (8 episodes, 2008) |
 | Channing Cooke | ... | Herself (8 episodes, 2009) |
 | Kevin Hunte | ... | Himself (8 episodes, 2009) |
 | Jean Marc Genereux | ... | Himself - Choreographer / ... (7 episodes, 2006-2009) |
 | Musa A. Cooper | ... | Himself (7 episodes, 2005-2006) |
 | Dorian Sanchez | ... | Herself - Choreographer / ... (7 episodes, 2006-2009) |
 | Donyelle Jones Denise | ... | Herself / ... (7 episodes, 2006-2008) |
 | Asuka Kondoh | ... | Herself (7 episodes, 2009) |
 | Jonathan Platero | ... | Himself (7 episodes, 2009) |
 | Ivan Koumaev | ... | Himself (6 episodes, 2006) |
 | Jimmy Arguello | ... | Himself (6 episodes, 2007) |
 | Faina Savich | ... | Herself (6 episodes, 2007) |
 | Chris Jarosz | ... | Himself (6 episodes, 2008) |
 | Chelsea Traille | ... | Herself (6 episodes, 2008) |
 | Pauline Mata | ... | Herself (6 episodes, 2009) |
 | Peter Sabasino | ... | Himself (6 episodes, 2009) |
 | Joshuah Michael | ... | Himself (5 episodes, 2005-2006) |
 | Allison Holker | ... | Herself / ... (5 episodes, 2006-2008) |
 | Natalie Fotopoulos | ... | Herself (5 episodes, 2006) |
 | Jason Gilkison | ... | Himself - Choreographer / ... (5 episodes, 2008-2009) |
 | Max Kapitannikov | ... | Himself (5 episodes, 2009) |

| Sandy Colton | ... | Herself (4 episodes, 2005-2008) |
 | Ashle Dawson | ... | Herself / ... (4 episodes, 2005-2008) |
 | Lauren Sanchez | ... | Herself - Host / ... (4 episodes, 2005-2006) |
 | Ron Montez | ... | Himself - Choreographer (4 episodes, 2006-2009) |
 | Michael Mead | ... | Himself / ... (4 episodes, 2006-2007) |
 | Toni Redpath | ... | Herself - Choreographer / ... (4 episodes, 2006-2007) |
 | Martha Nichols | ... | Herself (4 episodes, 2006) |
 | Ryan Rankine | ... | Himself (4 episodes, 2006) |
 | Jaymz Tuaileva | ... | Himself (4 episodes, 2006) |
 | Ashlee Langas | ... | Herself (4 episodes, 2007) |
 | Ricky Palomino | ... | Himself (4 episodes, 2007) |
 | Marquis Cunningham | ... | Himself (4 episodes, 2008) |
 | Susie Garcia | ... | Herself (4 episodes, 2008) |
 | Phillip Attmore | ... | Himself (4 episodes, 2009) |
 | Laurie Ann Gibson | ... | Herself - Choreographer (4 episodes, 2009) |
 | Bianca Revels | ... | Herself (4 episodes, 2009) |
 | Amanda Rodriguez | ... | Herself - Assistant Choreographer / ... (4 episodes, 2009) |
 | Stacey Tookey | ... | Herself - Choreographer / ... (4 episodes, 2009) |
 | Ashley Valerio | ... | Herself (4 episodes, 2009) |
 | Louis van Amstel | ... | Himself - Choreographer (4 episodes, 2009) |
 | Melody Lacayanga | ... | Herself / ... (3 episodes, 2005-2008) |
 | Kamilah Barrett | ... | Herself (3 episodes, 2005-2006) |
 | Melissa Vella | ... | Herself (3 episodes, 2005-2006) |
 | Toni Basil | ... | Herself - Guest Judge (3 episodes, 2008-2009) |
 | Rayven Armijo | ... | Herself (3 episodes, 2008) |
 | Jamie Bayard | ... | Himself (3 episodes, 2008) |
 | Ariana DeBose | ... | Herself (3 episodes, 2009) |

| Spencer Liff | ... | Himself - Choreographer (3 episodes, 2009) |
 | Dave Scott | ... | Himself - Choreographer (3 episodes, 2009) |
 | Cicely Bradley | ... | Herself - Guest Judge / ... (2 episodes, 2006) |
 | Olisa Thompson | ... | Herself - Guest Judge / ... (2 episodes, 2006) |
 | Ryan Conferido | ... | Himself / ... (2 episodes, 2005-2008) |
 | Artem Chigvinsev | ... | Himself (2 episodes, 2005-2006) |
 | Jamile McGee | ... | Himself (2 episodes, 2005-2006) |
 | Bonnie Lythgoe | ... | Herself - Judge (2 episodes, 2005) |
 | Jeff Thacker | ... | Himself - Judge (2 episodes, 2005) |
 | David Kenneth Soller | ... | Himself (2 episodes, 2006-2007) |
 | Jessica Bernard | ... | Herself (2 episodes, 2006) |
 | Ben Susak | ... | Himself (2 episodes, 2006) |
 | Aleksandra Wojda | ... | Herself (2 episodes, 2006) |
 | France Mosseau | ... | Choreographer Assistent / ... (2 episodes, 2007-2009) |
 | OneRepublic | ... | Themselves / ... (2 episodes, 2007-2008) |
 | Youri Nelzine | ... | Himself - Choreographer (2 episodes, 2008-2009) |
 | Tony Bellissimo | ... | Himself (2 episodes, 2009) |
 | Jennifer Thomas Damalas | ... | Herself - Choreographer (2 episodes, 2009) |
 | Jocelyn Dowling | ... | Herself - Choreographer (2 episodes, 2009) |

| Brandon Dumlao | ... | Himself (2 episodes, 2009) |
 | Brody Nicholas Lee | ... | Rage Boyz Crew / ... (2 episodes, 2009) |
 | Cody Benjamin Lee | ... | Rage Boyz Crew / ... (2 episodes, 2009) |
 | Nakul Dev Mahajan | ... | Himself / ... (2 episodes, 2009) |
 | Thomasz Mielnicki | ... | Himself - Choreographer (2 episodes, 2009) |
 | Matthew Moseley | ... | Himself (2 episodes, 2009) |
 | Paris Torres | ... | Herself (2 episodes, 2009) |
|
| Dan Sacks | .... | segment producer / senior producer / ... (72 episodes, 2005-2009) |
| Adam Cooper | .... | producer / segment producer / ... (70 episodes, 2007-2009) |
| Mike Deffina | .... | producer / associate producer / ... (68 episodes, 2007-2009) |
| Mike Yurchuk | .... | producer / senior producer (42 episodes, 2007-2009) |
| Zoe Brown | .... | producer / senior producer (37 episodes, 2005-2008) |
| Barton Kimball | .... | associate producer (23 episodes, 2008) |
| Jensen Moon | .... | associate producer (23 episodes, 2009) |
| Michelle Wilker | .... | line producer (19 episodes, 2009) |
| Simon Lythgoe | .... | producer (11 episodes, 2005-2007) |
| Brent Wilson | .... | producer (10 episodes, 2009) |
| Nigel Lythgoe | .... | executive producer (8 episodes, 2005-2009) |
| Barry Adelman | .... | executive producer (5 episodes, 2008-2009) |
| James Breen | .... | co-executive producer (5 episodes, 2008-2009) |
| Simon Fuller | .... | executive producer (5 episodes, 2008-2009) |
| Hope Wilson | .... | producer / associate producer (5 episodes, 2008-2009) |
| Sabrina Rufo | .... | associate producer (5 episodes, 2008) |
| Jeff Thacker | .... | co-executive producer / senior producer / ... (4 episodes, 2005-2009) |
| Cam Frierson | .... | associate producer (4 episodes, 2007) |
| Kristopher Lythgoe | .... | producer (4 episodes, 2008-2009) |
| Andrew Fickett | .... | associate producer (3 episodes, 2009) |
| Jessica Podell | .... | associate producer (3 episodes, 2009) |
| Lawrence Yarwood | .... | senior supervising producer / supervising producer (3 episodes, 2009) |
| Quint Strack | .... | field producer (2 episodes, 2005) |
| Colleen Childe | .... | producer (2 episodes, 2008-2009) |
| Johnny Bell | .... | associate producer / field producer (2 episodes, 2009) |
| Mark Gamsey | .... | associate producer (2 episodes, 2009) |
| Ashley Shea Landers | .... | associate producer (2 episodes, 2009) |
| Allen Shapiro | .... | executive producer (2 episodes, 2009) |
|
| Norm Betts | .... | associate producer (unknown episodes) |
| Nicola Gaha | .... | producer (unknown episodes) |
| Nicole Slamer | .... | associate producer (unknown episodes) |
| Tucker Smith | .... | associate producer (unknown episodes) |
| |
|
| Alanna De Carlo | .... | production assistant (59 episodes, 2007-2009) |
| James Garcia | .... | production assistant (43 episodes, 2007-2008) |
| Carrie Foster | .... | contestant coordinator / production coordinator (42 episodes, 2005-2009) |
| Lisa Pritchett | .... | production assistant (42 episodes, 2007-2008) |
| Charles Chen | .... | audience page (35 episodes, 2005-2008) |
| Peter Tran | .... | production assistant (23 episodes, 2007) |
| Chandra Leigh | .... | field production assistant (23 episodes, 2009) |
| Patrice Patrick | .... | booth production associate (19 episodes, 2009) |
| Jen Muccia | .... | talent coordinator (18 episodes, 2008) |
| Christine Avery | .... | assistant: executive producer (18 episodes, 2009) |
| Shiran Stotland | .... | technical director (18 episodes, 2009) |
| Danielle Kasen | .... | choreographer (13 episodes, 2006-2009) |
| Aaron Hernandez | .... | production assistant (13 episodes, 2007) |
| Steven Solars | .... | production assistant: Las Vegas (7 episodes, 2009) |
| Neil Raboy | .... | production assistant (5 episodes, 2008) |
| David Burberry | .... | production assistant (4 episodes, 2006) |
| Christopher J. Buzzell | .... | production assistant (4 episodes, 2009) |
| Carly Bodmer | .... | production assistant (2 episodes, 2005-2006) |
| Maggie Carlyle | .... | production coordinator (2 episodes, 2008) |
| Jeffrey K. Golden | .... | production assistant (2 episodes, 2008) |
| Brandon Dowling | .... | production assistant (2 episodes, 2009) |
| Brian Friedman | .... | choreographer (2 episodes, 2009) |
| Adam T. Gutierrez | .... | production assistant (2 episodes, 2009) |
|
| Mikki Raphael Rosenberg | .... | production assistant (unknown episodes, 2006) |
| Norm Betts | .... | contestant coordinator (unknown episodes) |
| Jake Buchheit | .... | production assistant (unknown episodes) |
| Joshua Carmer | .... | production assistant (unknown episodes) |
| Kristin Carolan | .... | assistant to executive producer (unknown episodes) |
| Bubba Carr | .... | choreographer (unknown episodes) |
| Angela Cobb | .... | production assistant (unknown episodes) |
| Alexis Cohen | .... | assistant to executive producer (unknown episodes) |
| Michael Isaiah Collins | .... | production assistant (unknown episodes) |
| David Distinti | .... | technical director (unknown episodes) |
| Eliz Eskeranli | .... | production assistant (unknown episodes) |
| Katie Fennelly | .... | production assistant (unknown episodes) |
| Peter Margolis | .... | associate director (unknown episodes) |
| Dylan Moore | .... | assistant to executive (unknown episodes) |
| Marc Quandt | .... | production assistant (unknown episodes) |
| Dorian Sanchez | .... | choreographer (unknown episodes) |
| |