| Cosgrave, Helen | Helen Cosgrave | Actor | 1963 | 1 | |
| Cosgrif, Martin | Martin Cosgrif | Actor | 1980 | 1 | |
| Cosgrove, Aedín | Aedín Cosgrove | Designer, Lighting Designer | 2012 - 2013 | 4 | 1 |
| Cosgrove, Edward | Edward Cosgrove | Actor | 1947 | 1 | |
| Cosham, Ralph | Ralph Cosham | Actor | 1990 - 1995 | 2 | |
| Cosier, E. David | E. David Cosier | Director | 2013 | 1 | |
| Cosío, Joaquín | Joaquín Cosío | Actor | 2006 | 10 | |
| Cosla, Edward | Edward Cosla | Sound Designer | 2003 - 2011 | 34 | |
| Cosma, Aurel | Aurel Cosma | Lighting Designer | 1995 - 2010 | 3 | |
| Cosma, Flavia | Flavia Cosma | Director | 1967 | 1 | |
| Cosma, Ray | Ray Cosma | Actor | 2012 | 1 | |
| Cosmar, Bruno | Bruno Cosmar | Actor | 2010 | 2 | |
| Coso, Ramón | Ramón Coso | Translator | 1931 | 1 | |
| Cososchi, Victoria | Victoria Cososchi | Actor | 1928 | 1 | |
| Cossa, Joaquim | Joaquim Cossa | | | | |
| Cossa, Mariano | Mariano Cossa | Composer | 2006 | 2 | |
| Cossardt, Jörg | Jörg Cossardt | Actor, Director | 1967 - 1971 | 3 | |
| Cosse, Villanueva | Villanueva Cosse | Actor | 1961 | 1 | |
| Cosse, Villanueva | Villanueva Cosse | Actor | 1976 | 1 | |
| Cossia, Maria, Chiara | Maria Chiara Cossia | Actor | 2016 | 1 | |
| Cossins, James | James Cossins | Actor | 1958 | 1 | |
| Coßmann, Carl | Carl Coßmann | Actor | 1897 | 1 | |
| Cossovel, Eduard | Eduard Cossovel | Actor | 1934 - 1948 | 2 | |
| Costa Giovangigli, Orazio | Orazio Costa Giovangigli | Director | 1943 - 1963 | 5 | |
| Costa, Crystal | Crystal Costa | Dancer | 2020 | 1 | |
| Costa, Salvatore | Salvatore Costa | Actor | 2013 | 1 | |
| Costa, Carles | Carles Costa | Translator | 1893 - 1903 | 4 | |
| Costa, Claire | Claire Costa | Producer | 2023 - 2025 | 39 | |
| Costa, Diego | Diego Costa | Designer | 2004 | 2 | |
| Costa, Enrique | Enrique Costa | Actor | 1994 | 1 | |
| Costa, Ernesto | Ernesto Costa | Lighting Designer | 1997 - 1998 | 3 | |
| Costa, Heinz | Heinz Costa | Actor | 1928 | 1 | |
| Costa, Ivan | Ivan Costa | Actor | 1952 | 1 | |
| Costa, Jaume | Jaume Costa | Dancer | 2015 | 2 | |
| Costa, Julia | Julia Costa | Actor | 1964 - 1968 | 2 | 1 |
| Costa, Kevin | Kevin Costa | Director | 2008 | 1 | |
| Costa, Marcelo Farias | Marcelo Farias Costa | Actor, Director | 1994 | 2 | |
| Costa, Maria | Maria Costa | Actor | 1896 | 1 | |
| Costa, Martin | Martin Costa | Actor | 1933 - 1972 | 4 | |
| Costa, Nathaniel | Nathaniel Costa | Actor | 2010 | 1 | |
| Costa, Oderson, Brasil | Oderson Brasil Costa | Lighting Designer | 1966 | 1 | |
| Costa, Perla | Perla Costa | Actor | 1979 | 1 | |
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