PRINCIPALS
| Mark: | Neil Patrick Harris |
| Roger: | Christian Mena |
| Mimi: | Julia Santana |
| Collins: | Mark Leroy Jackson |
| Angel: | Wilson Cruz |
| Joanne: | Kenna Ramsey |
| Maureen: | Leigh Hetherington |
| Benny: | D'Monroe |
| Mark's mom: | Carla Bianco |
| Mr. Jefferson / Soloist#2 / Christmas Caroler: | Kevyn "Kye" Brackett |
| Mrs. Jefferson / Soloist#1 / Bag Lady: | Sharon Brown |
| Gordon / The Man / Mr. Grey: | Curt Skinner |
| Steve: | Andy Senor |
| Paul/waiter: | Brent Davin Vance |
| Alexi Darling / Roger's mom: | Sala Iwamatsu |
SWINGS
| Hallie Bulleit |
| Monique Daniels |
| Laura Dias |
| Owen Johnston II |
| Ron Christopher Patric |
| Paul Oakley Stovall |
UNDERSTUDIES
| For Roger and Mark | Ron Christpher Patric Curt Skinner |
| For Tom Collins | Kye Brackett Paul Oakley Stovall |
| For Benny | Paul Oakley
Stovall Brent Davin Vance |
| For Joanne: | Monique Daniels Laura Dias |
| For Angel: | Owen Johnston II Andy Senor |
| For Mimi: | Monique Daniels Laura Dias |
| For Maureen: | Carla Bianco Hallie Bulleit |