| Name | Functions  | Event Dates | Events | Resources | ||
|---|---|---|---|---|---|---|
| Carlo Orlando | Assistant Director | 2021 | 1 | |||
| Cathleen O'Malley | Assistant Director | 2022 | 1 | |||
| Paolo Orlandelli | Assistant Director | 2019 | 1 | |||
| Rylee O’Rourke | Assistant Director, Producer | 2020 - 2022 | 2 | |||
| Claudia Orlovsky | Choreographer | 1998 | 1 | |||
| Geri O'Kelly | Choreographer | 1993 | 1 | |||
| - Oscar | Choreographer | 2006 | 1 | |||
| Sally Owen | Choreographer | 2010 | 1 | |||
| Margarethe Oehlschläger | Choreographer | 1921 | 1 | |||
| Otto Ornelli | Choreographer | 1938 | 1 | |||
| Bodil Ousdal | Choreographer | 1985 - 1991 | 6 | |||
| Johan Osuldsen | Choreographer | 1998 - 2000 | 3 | |||
| Luboš Ogoun | Choreographer | 1986 | 1 | |||
| Katherine O'Neill | Choreographer | 2004 | 1 | |||
| Vera Obradović | Choreographer | 2005 | 1 | |||
| Artur Oščepkov | Choreographer | 2013 | 1 | |||
| Sulekha Ali Omar | Choreographer, Dancer | 2008 - 2010 | 4 | |||
| Marcin Oleś | Composer | 2006 - 2009 | 7 | |||
| Bartłomiej Brat Oleś | Composer | 2006 - 2009 | 7 | |||
| Otto - | Composer | 2002 | 1 | |||
| Jacques Offenbach | Composer | 1880 | 1 | |||
| Charles Oberthür | Composer | 1880 | 1 | |||
| Nils Ostendorf | Composer | 2008 - 2014 | 54 | 1 | ||
| Norman O'Neill | Composer | 1913 | 1 | |||
| Thom O'Connor | Composer | 2013 | 1 | |||
| Stephen Oliver | Composer | 1977 - 1983 | 9 | |||
| Jakub Ostaszewski | Composer | 1995 | 1 | |||
| György Orbán | Composer | 1972 - 2002 | 2 | 1 | ||
| Scott O’Brien | Composer | 2001 | 1 | |||
| Leif Olsen | Composer | 2009 | 1 | |||
| Sean O'Riada | Composer | 1961 | 1 | |||
| Bettina Ostermeier | Composer | 2011 | 1 | |||
| Anders Ortman | Composer | 2020 | 5 | |||
| Bruce Odland | Composer | 2013 | 1 | |||
| Thodoris Oikonomou | Composer, Musician | 2007 - 2020 | 2 | |||
| Cristian Oroșanu | Conductor | 2012 | 1 | |||
| Stelian Olariu | Conductor | 2007 | 1 | |||
| Vladimir Ovodok | Conductor | 2020 | 1 | |||
| Kathrine Ogletree | Costume Designer | 2003 | 1 | |||
| César Olivar | Costume Designer | 2004 | 1 | 1 | ||
| Leni Osswald | Costume Designer | 1955 - 1962 | 2 | |||
| Juliet Ouyoung | Costume Designer | 1993 | 1 | |||