- Colin Hanlon
- Â Tim Trull 20 episodes, 2010-2014
- Kate Wetherhead
- Â Penny Reilly 20 episodes, 2010-2014
- Lindsay Nicole Chambers
- Â Gail Liner 20 episodes, 2010-2014
- Stephen Bienskie
- Â Steven Ferrell 18 episodes, 2010-2014
- Santino Fontana
- Â Aaron Miller 16 episodes, 2010-2014
- Asmeret Ghebremichael
- Â Raina Pearl 14 episodes, 2010-2014
- Zakiya Young
- Â Opening Credit Actor / ... 12 episodes, 2010-2014
- Jeffrey Kuhn
- Â Andy Edmond 12 episodes, 2011-2014
- Max von Essen
- Â Cameron Dante 11 episodes, 2011-2014
- Andrew Keenan-Bolger
- Â Donny Rich 10 episodes, 2010-2012
- Anne L. Nathan
- Â Linda Avery 10 episodes, 2010-2014
- Donna Vivino
- Â Serena Maxwell 10 episodes, 2012-2014
- Minami Yusui
- Â Opening Credit Actor / ... 9 episodes, 2011-2012
- Patrick Lynn
- Â Opening Credit Actor / ... 9 episodes, 2011-2014
- Jared Gertner
- Â Randall Moody 8 episodes, 2011-2014
- Wade McCollum
- Â Nolan Grigsby 8 episodes, 2011-2014
- Allysa Shorte
- Â Opening Credit Actor 8 episodes, 2011-2012
- Sarah Flanagan
- Â Opening Credit Actor / ... 8 episodes, 2011-2012
- Justin Luciano
- Â Opening Credit Actor / ... 8 episodes, 2011-2012
- Annaleigh Ashford
- Â Adorable Girl / ... 7 episodes, 2010-2012
- Michael Montalbano
- Â Opening Credit Actor / ... 7 episodes, 2010-2012
- Drew Berezowitz
- Â Opening Credit Actor / ... 7 episodes, 2010-2011
- Angela Theresa Collins
- Â Opening Credit Actor / ... 7 episodes, 2011-2012
- Stephanie Warren
- Â Opening Credit Actor / ... 7 episodes, 2010-2012
- Steven Booth
- Â Chris Corcoran 7 episodes, 2012-2014
- Adam Heller
- Â Adam Greenbaum / ... 7 episodes, 2011-2014
- Courtney Reed
- Â Deborah Lee 6 episodes, 2011-2014
- Donna Lynne Champlin
- Â Kim Gifford 6 episodes, 2011-2014
- Mark Gessner
- Â Eric Mousse / ... 6 episodes, 2012-2014
- Jennifer Diamond
- Â Belinda Tattenbaum 6 episodes, 2012-2014
- Tina Marie Casamento
- Â Poppy Cosgrove / ... 6 episodes, 2012-2014
- Nehal Joshi
- Â Vincent Savio 6 episodes, 2014
- Laura Jordan
- Â Stacey Oleszczuk / ... 5 episodes, 2011-2014
- Kevin Pariseau
- Â Rick Valencia 5 episodes, 2010-2012
- Teddy Bergman
- Â Alex Chambers 5 episodes, 2014
- Daniel Breaker
- Â Dean Klausen 5 episodes, 2014
- Shina Ann Morris
- Â Opening Credit Actor / ... 5 episodes, 2012-2014
- Thayne Jasperson
- Â Opening Credit Actor / ... 5 episodes, 2012-2014
- Ryan Steele
- Â Opening Credit Actor / ... 5 episodes, 2012-2014
- Patrick Heusinger
- Â Eric Hennigan 4 episodes, 2010-2011
- Kyle Beckley Abourizk
- Â Camera A Operator / ... 4 episodes, 2011-2014
- Marilyn Sokol
- Â Agnes Vetrulli 4 episodes, 2014
- David Hull
- Â Opening Credit Actor / ... 4 episodes, 2014
- Jeffrey Sousa
- Â Opening Credit Actor / ... 4 episodes, 2014
- Stephanie Martignetti
- Â Opening Credit Actor / ... 4 episodes, 2014
- Carol Angeli
- Â Opening Credit Actor / ... 4 episodes, 2014
- Adam Gwon
- Â Audition Accompanist / ... 3 episodes, 2011-2014
- Hunter Foster
- Â Adam Cross 3 episodes, 2012-2014
- Kelly Warne
- Â Auditioner / ... 3 episodes, 2011-2014
- Neal Hunter Hyde
- Â Accompanist / ... 3 episodes, 2012-2014
- Kari Grunberg
- Â Background / ... 3 episodes, 2012-2014
- Cameron Adams
- Â Opening Credit Actor / ... 3 episodes, 2014
- Carmel Dean
- Â Ruby Potter 2 episodes, 2011-2012
- Beth Leavel
- Â Val Reilly 2 episodes, 2011-2012
- Charlie Williams
- Â Seth 2 episodes, 2011
- Rick Elice
- Â Don Martin 2 episodes, 2011-2012
- Tory Ross
- Â Mindy Abeles / ... 2 episodes, 2011
- Chanasa Ababa
- Â Abby 2 episodes, 2011
- Maria McConville
- Â Angela DeWitt 2 episodes, 2012
- Chris Barron
- Â Louellen Walsh 2 episodes, 2010
- Helen Anker
- Â Lucy Slack 2 episodes, 2011
- Julie Foldesi
- Â Auditioner / ... 2 episodes, 2010-2011
- Hannah Seymour
- Â Adorable Girl #47 / ... 2 episodes, 2011-2012
- Dola Rashad
- Â Eva Halden 2 episodes, 2012
- Josh Lamon
- Â Actor #2 / ... 2 episodes, 2011-2012
- Chandler Sante
- Â Van Jensen 2 episodes, 2011
- Bret Shuford
- Â Daniel McDaniel 2 episodes, 2011
- Merrill Grant
- Â Auditioner / ... 2 episodes, 2011
- Jason Michael Snow
- Â Matt Wyly 2 episodes, 2010
- Becca Ayers
- Â Edith Wharton 2 episodes, 2010
- Tommy McDowell
- Â Background / ... 2 episodes, 2011-2014
- Jenn Colella
- Â Mina Miller Edison (Sarah Jeffreys) / ... 2 episodes, 2014
- Harriet Sansom Harris
- Â Theresa Amesworth 2 episodes, 2014
- Katelyn Miles
- Â Auditioner / ... 2 episodes, 2011-2014
- T.J. Newton
- Â Background / ... 2 episodes, 2011-2014
- Adam Kaplan
- Â Opening Credit Actor / ... 2 episodes, 2014
- Blake Whyte
- Â Josh Clark 2 episodes, 2014
- Bradshaw Call
- Â Background 2 episodes, 2014
- Lateisha Rae
- Â Background 2 episodes, 2014
- David Beach
- Â Richard Kegley 1 episode, 2010
- Jill Abramovitz
- Â Stephanie Serber 1 episode, 2010
- Kristin Chenoweth
- Â Cindy Ruehl 1 episode, 2011
- Danny Burstein
- Â Jerry Labove 1 episode, 2011
- Mary Testa
- Â Rosie Lomenda 1 episode, 2011
- Brad Oscar
- Â Bill Hobbs 1 episode, 2011
- Barbara Walsh
- Â Bridget Sante 1 episode, 2011
- Hunter Bell
- Â Byron Vahle 1 episode, 2011
- Kristen Johnston
- Â Izzy Hall 1 episode, 2012
- Jesse Tyler Ferguson
- Â Jared Halstead 1 episode, 2012
- Mary Beth Peil
- Â Beverly Wilcox 1 episode, 2012
- Olive
- Â Frenchie 1 episode, 2012
- Jonathan Freeman
- Â Greg Bonomelli 1 episode, 2011
- Rebecca Luker
- Â Hannah Labove 1 episode, 2011
- Jeff Blumenkrantz
- Â Leo Harris 1 episode, 2011
- Sally Wilfert
- Â Karen Ferguson 1 episode, 2011
- Michael Urie
- Â Zach Blumenkrantz 1 episode, 2012
- Adam Pascal
- Â Brent Jarvis 1 episode, 2012
- Tyler Maynard
- Â Chad Davis 1 episode, 2011
- Joe Iconis
- Â Judd Mayer 1 episode, 2012
- Douglas Cohen
- Â Accompanist 1 episode, 2011
- Nina Duncan
- Â Anna Jacobs 1 episode, 2012
- Liz Larsen
- Â Holly Freers 1 episode, 2011
- Michael Berresse
- Â Ben Bailey 1 episode, 2011
- Roger Rees
- Â Roger Rees 1 episode, 2012
- Erik Liberman
- Â Len Rolls 1 episode, 2012
- Alan Campbell
- Â Sam Moriarty 1 episode, 2011
- Tom Souhrada
- Â Victor Freers 1 episode, 2011
- Madeline Doherty
- Â Esther Katzman 1 episode, 2011
- Dana Steingold
- Â Adorable Girl 1 1 episode, 2010
- Jessica Grové
- Â Rebecca Swift 1 episode, 2011
- Jaclyn Huberman
- Â Casey Carrera 1 episode, 2011
- Matt Cavenaugh
- Â Chace Ryan 1 episode, 2011
- Leslie McDonel
- Â Maxine Oliver 1 episode, 2011
- Kevin Covert
- Â Ernie Page 1 episode, 2011
- Sam Tedaldi
- Â Shelby Moore 1 episode, 2011
- Rachel Dratch
- Â Fiona Evans 1 episode, 2011
- David Josefsberg
- Â Cy Siegert 1 episode, 2011
- Michael Riedel
- Â Michael Riedel 1 episode, 2012
- Judith Light
- Â Sharon Duvall 1 episode
- Cady Huffman
- Â Andrea Dodson 1 episode, 2010
- Steve Rosen
- Â Gary Taylor 1 episode, 2010
- Sarah Saltzberg
- Â Gona Sussman 1 episode, 2011
- Marla Mindelle
- Â Olivia Masters 1 episode, 2012
- Steven Pasquale
- Â Reed Rozelle 1 episode, 2011
- Barrett Foa
- Â Gil Bure 1 episode, 2011
- Ariana Boussard-Reifel
- Â Elsa Jensen 1 episode, 2011
- Corey Hummerston
- Â Composition Callbacks Group 1 1 episode, 2012
- Devon Goffman
- Â Brick 1 episode, 2010
- Dio Anthony
- Â Playwright 1 episode, 2010
- Jeremy Jordan
- Â Levi Murney 1 episode, 2011
- Cortney Wolfson
- Â Lindsay Kane 1 episode, 2011
- Derrick Baskin
- Â Julius White 1 episode, 2011
- Jason Vesey
- Â Composition Callbacks Group 1 1 episode, 2012
- Kyle Harris
- Â Mike Dakin 1 episode, 2011
- Stanley Bahorek
- Â Party Goer 1 episode, 2011
- Julia Kwamya
- Â Adorable Girl #2 1 episode, 2011
- Farah Alvin
- Â Jennifer Lyons 1 episode, 2011
- Maryruth Barnett
- Â Auditioner #1 1 episode, 2011
- Lin-Manuel Miranda
- Â Auditioner #1 1 episode, 2012
- Thomas Schumacher
- Â Fan 1 episode
- Jessica Fontana
- Â Adorable Girl 1 1 episode, 2010
- Jessica Waxman
- Â 'Laura' 1 episode, 2010
- Ann Harada
- Â Tess Chen 1 episode, 2011
- Allison Case
- Â Mara Drake 1 episode, 2011
- Van Hughes
- Â Drew Potter 1 episode, 2011
- Jeff Croiter
- Â Party Goer 1 episode, 2011
- Joe Cassidy
- Â Kevin Brennan 1 episode, 2012
- Howie Michael Smith
- Â Todd Gorge 1 episode, 2012
- Ryan Link
- Â Composition Callbacks Group 1 1 episode, 2012
- Alle-Faye Monka
- Â Paula Paige 1 episode, 2011
- Otis Cook
- Â Dave 1 episode, 2011
- Addi McDaniel
- Â Emily Kent 1 episode, 2011
- Pamela Dayton
- Â Bonnie Freeman 1 episode, 2011
- Jackie Hoffman
- Â Auditioner #2 1 episode, 2012
- Mark Fisher
- Â Dale Overby 1 episode, 2012
- David Rossmer
- Â Phil Daroff 1 episode, 2010
- F. Michael Hayne
- Â Casting Director 1 episode, 2010
- Lisa Brescia
- Â Nora 1 episode, 2011
- Rozi Baker
- Â Dena Havasi 1 episode, 2011
- Derek Stratton
- Â Bo 1 episode, 2011
- Kerry Butler
- Â Auditioner #3 1 episode, 2012
- Kimiko Glenn
- Â Katie Summers 1 episode
- Michael Rupert
- Â Heath Marcus 1 episode, 2010
- Sheri Sanders
- Â Girl 1 1 episode, 2010
- Gaelen Gilliland
- Â June Havasi 1 episode, 2011
- Becky Gulsvig
- Â Tina Warren 1 episode, 2011
- John Brady
- Â Willy 1 episode, 2011
- Edwin Olvera
- Â Seth 1 episode, 2011
- Lea DeLaria
- Â Auditioner #4 1 episode, 2012
- Erika Iverson
- Â Clenched Student 1 episode, 2012
- Kelli O'Hara
- Â Anna Grace 1 episode, 2014
- Raphael Krasnow
- Â Acting Class Student 1 episode, 2010
- Marken Greenwood
- Â Girl 2 1 episode, 2010
- Bebe Wood
- Â Lizzie Walken 1 episode, 2011
- Matthew Risch
- Â Ollie Grant 1 episode, 2011
- Roberto Olvera
- Â Roy 1 episode, 2011
- Brian Letendre
- Â Hamlet 1 episode, 2011
- Harvey Fierstein
- Â Auditioner #5 1 episode, 2012
- Marc Kudisch
- Â Joe Flunt 1 episode, 2012
- Casey Leigh Thompson
- Â Clenched Student 1 episode, 2012
- Brian d'Arcy James
- Â Read Whatley 1 episode, 2014
- Stephen DeRosa
- Â Sydney Reiser 1 episode, 2014
- Lucas Papaelias
- Â Thomas Edison (Damien Cramer) 1 episode
- Kate Pazakis
- Â Girl 3 1 episode, 2010
- Cecilia Senocak
- Â Acting Class Student 1 episode, 2010
- Chita Rivera
- Â Gladys Franklin 1 episode, 2011
- Jennifer Sanchez
- Â Jolie Wallace 1 episode, 2011
- Tia Altinay
- Â Ruth Younger 1 episode, 2011
- John McDaniel
- Â Ulrich Hansen 1 episode, 2012
- Louise Beard
- Â Lulu Shores 1 episode, 2012
- Cass Morgan
- Â Marsha Pinkett 1 episode, 2012
- Peter Friedman
- Â Stuart Schulman 1 episode, 2014
- Audrey Lynn Weston
- Â Nikki Orley 1 episode, 2014
- Michael James Scott
- Â William Fox 1 episode
- Bernadette Marshman
- Â Acting Class Student 1 episode, 2010
- Michael Croiter
- Â Assistant to Ms. Franklin 1 episode, 2011
- Jack Falahee
- Â Clenched Student 1 episode, 2012
- Jim Caruso
- Â Sven Karlsbad 1 episode, 2012
- David Abeles
- Â Carl Laemmle 1 episode
- Mike Kelton
- Â Gay 1 1 episode, 2010
- Märgen Soliman
- Â Acting Class Student 1 episode, 2010
- Nick Jonas
- Â Lonely Dancer 1 episode, 2012
- Tally Sessions
- Â Clenched Student 1 episode, 2012
- Will Swenson
- Â Fred Planer 1 episode, 2014
- Matt Deangelis
- Â Narrating Ensemble 1 episode
- Scott Barnhardt
- Â Gay 2 1 episode, 2010
- Aidan Sank
- Â Acting Class Student 1 episode, 2010
- Brad Gardner
- Â Music Director 1 episode, 2011
- Robert Dalton
- Â Auditioner 1 episode, 2011
- Mike Duncan
- Â Within the Song Student 1 episode, 2012
- Brian Patrick Murphy
- Â Clenched Student 1 episode, 2012
- Alysha Umphress
- Â Narrating Ensemble 1 episode
- Cole Escola
- Â Gay 3 1 episode, 2010
- Carina Zabrodsky
- Â Acting Class Student 1 episode, 2010
- Scott Yannick
- Â Director 1 episode, 2011
- Molly Ranson
- Â Dawn Iris 1 episode, 2012
- Becca Lee
- Â Within the Song Student 1 episode, 2012
- Nick Dalton
- Â Clenched Student 1 episode, 2012
- Dani Spieler
- Â Girl with Curling Iron 1 episode, 2014
- Will Shuler
- Â Pianist 1 episode
- Jeff Hiller
- Â Gay 4 (Sonny) 1 episode, 2010
- Evan Griffiths
- Â Acting Class Student 1 episode, 2010
- Nate Brogan
- Â Reader 1 episode, 2011
- Celia Keenan-Bolger
- Â Michelle Loudon 1 episode, 2012
- David Budinger
- Â Actor #1 1 episode, 2012
- Anne Horak
- Â Kathleen 1 episode, 2014
- Aaron Albano
- Â Dance Call Boy 1 episode, 2014
- Dave Ratajczak
- Â Drummer 1 episode
- Annie Watkins
- Â Acting Class Student 1 episode, 2010
- Yasir Haque
- Â Industry Person at Reading 1 episode, 2011
- Bryce Ryness
- Â Within the Song Student 1 episode, 2012
- Katie Rose Clarke
- Â Ashley 1 episode, 2014
- Emily Afton
- Â Compass-ition Performer 1 episode, 2014
- Brett Molik
- Â Acting Class Student 1 episode, 2010
- Karl Hinze
- Â Industry Person at Reading 1 episode, 2011
- Brett Lowell
- Â Ed Rosendahl 1 episode, 2012
- Keith Varner
- Â Within the Song Student 1 episode, 2012
- Jenny Powers
- Â Karen 1 episode, 2014
- Alex Deleo
- Â Compass-ition Performer 1 episode, 2014
- Zakia Young
- Â Opening Credit Actor 1 episode, 2010
- Nicholas Searles
- Â Industry Person at Reading 1 episode, 2011
- E.J. Griffon
- Â Composition Callbacks Group 2 1 episode, 2012
- Winslow Corbett
- Â Suzy 1 episode, 2014
- Bre Jackson
- Â Compass-ition Performer 1 episode, 2014
- Ryan Ramirez
- Â Auditioner 1 episode, 2011
- Lucas Brady
- Â Industry Person at Reading 1 episode, 2011
- James Monroe Iglehart
- Â Wilson Jones 1 episode, 2012
- Kara Lindsay
- Â Composition Callbacks Group 2 1 episode, 2012
- Tommy Bracco
- Â Dancer 1 episode, 2012
- Noah Jordan
- Â Compass-ition Performer 1 episode, 2014
- Kathryn York
- Â Industry Person at Reading 1 episode, 2011
- Ryan Breslin
- Â Dancer 1 episode, 2012
- Enrico Rodriguez
- Â Gaby Moliter 1 episode, 2012
- John Moauro
- Â Composition Callbacks Group 2 1 episode, 2012
- Heidi Blickenstaff
- Â Diana Rioux 1 episode, 2014
- Julia Rahm
- Â Industry Person at Reading 1 episode, 2011
- Kat Nejat
- Â Composition Callbacks Group 2 1 episode, 2012
- Michael Fatica
- Â Dancer 1 episode, 2012
- Darren Bunch
- Â Industry Person at Reading 1 episode, 2011
- Ben Fankhauser
- Â Ben 1 episode, 2012
- Sarah Roussos
- Â Composition Callbacks Group 2 1 episode, 2012
- Raleigh Tyler
- Â Accompanist 2 1 episode, 2014
- Garett Hawe
- Â Dancer 1 episode, 2012
- Rick Croiter
- Â Roger Davenport 1 episode, 2012
- Reymundo Santiago
- Â Composition Callbacks Group 2 1 episode, 2012
- Olivia Gunderson
- Â Sound Girl 1 episode, 2014
- Ashlee Rose Gaughan
- Â Industry Person at Reading 1 episode, 2011
- Bernice Croiter
- Â Laila Davenport 1 episode, 2012
- Ryan DeNardo
- Â Industry Person at Reading 1 episode, 2011
- Evan Kasprzak
- Â Dancer 1 episode, 2012
- Rhonda Barkow
- Â Party Goer 1 episode, 2012
- Eric William Morris
- Â Industry Person at Reading 1 episode, 2011
- Jess LeProtto
- Â Dancer 1 episode, 2012
- Justin Michael Bringer
- Â Party Goer 1 episode, 2012
- Jeff Deglow
- Â Gaffer 1 episode, 2014
- Drexel Heard II
- Â Industry Person at Reading 1 episode, 2011
- Andy Richardson
- Â Dancer 1 episode, 2012
- Judith Croiter
- Â Party Goer 1 episode, 2012
- Timothy Rodriguez
- Â Industry Person at Reading 1 episode, 2011
- Jack Scott
- Â Dancer 1 episode, 2012
- Erica Wiederlight
- Â Industry Person at Reading 1 episode, 2011
- Chelsey Alfredo
- Â Industry Person at Reading 1 episode, 2011
- Alex Wong
- Â Dancer 1 episode, 2012
- Henry Penning
- Â Party Goer 1 episode, 2012
- Ilana Bolotsky
- Â Industry Person at Reading 1 episode, 2011
- Chris Perfetti
- Â Party Goer 1 episode, 2012
- Christopher Gattelli
- Â Choreographer 1 episode, 2012
- Chad Murane
- Â Background 1 episode, 2014
- Zakiva Young
- Â Opening Credit Actor 1 episode, 2011
- JD Scalzo
- Â Party Goer 1 episode, 2012
- Lou Castro
- Â Associate Choreographer 1 episode, 2012
- Madeline Trumble
- Â Director 1 episode, 2012
- Josh Vicari
- Â Party Goer 1 episode, 2012
- Caitlin White
- Â Party Goer 1 episode, 2012
- Angela Thomas Collins
- Â Opening Credit Actor 1 episode, 2012
- Laura Osnes
- Â Audience Member 3 1 episode, 2014
- Amy Spanger
- Â Nina (2014) 1 episode, 2014
- Phoebe Strole
- Â Jill Peters 1 episode, 2014
- Tricia Paoluccio
- Â Audience Member #1 1 episode, 2014
- John Ellison Conlee
- Â Garth (Artistic Director) 1 episode, 2014
- John Bolton
- Â Greg Krutoff 1 episode, 2014
- Shaunice Alexander
- Â Schmackary's customer 1 episode, 2014
- Kelsey Anne Johnson
- Â Background 1 episode, 2014
- Joshua Gonzales
- Â Background 1 episode, 2014
- Daniel Berger
- Â Audience Member 2 1 episode, 2014
- Zachary Schmahl
- Â Self 1 episode, 2014
- Michael Schauble
- Â Background 1 episode, 2014
- Brittany Bartlett
- Â Schmackary's Staff 1 episode, 2014
- Brandon Suisse
- Â Background 1 episode, 2014
- Chris Karl
- Â Background 1 episode, 2014
- Suzzanne Grodner
- Â Audience Member 4 1 episode, 2014
- Audra McDonald
- Â Tracy Mintzner 1 episode
- Max Jenkins
- Â Bixby the Bartender 1 episode
- Michael Winther
- Â Emcee 1 episode
- Nick Corley
- Â Albert Yesnowitz 1 episode
- Brad Simmons
- Â 54 Below Accompanist 1 episode
- Charles Massey
- Â Supporting (uncredited) 1 episode