| Alcock, David | David Alcock | Actor | 2001 | 1 | |
| Alcock, David, | David Alcock | Actor | 1995 | 1 | |
| Alcock, John | John Alcock | Actor | 1999 | 1 | |
| Alcón, Alfredo | Alfredo Alcón | Actor | 1989 | 1 | |
| Alda, Bert | Bert Alda | Actor | 1932 | 1 | |
| Alda, Irene, | Irene Alda | Actor | 1915 | 1 | |
| Aldabo, Valérie | Valérie Aldabo | Actor | 2011 | 3 | |
| Aldacosta, Kate | Kate Aldacosta | Actor | 2017 | 1 | |
| Alden, Hortense | Hortense Alden | Actor | 1926 | 1 | |
| Alden, Mary | Mary Alden | Actor | 1915 - 1916 | 2 | |
| Alden, Nancy | Nancy Alden | Actor | 1925 | 2 | |
| Alder, Isabell | Isabell Alder | Actor | 1994 | 1 | |
| Alder, Jac | Jac Alder | Actor | 1970 | 1 | |
| Alder, Will | Will Alder | Lighting Designer, Sound Designer | 2018 | 36 | |
| Alderson, A. Clifton | A. Clifton Alderson | Actor | 1912 | 1 | |
| Aldinger, Heinrich | Heinrich Aldinger | Actor | 1914 | 2 | |
| Aldinger, Karl | Karl Aldinger | Actor | 1912 | 2 | |
| Aldobolyi, György Nagy | György Nagy Aldobolyi | Composer | 2006 | 1 | |
| Aldor, Bernd, | Bernd Aldor | Actor | 1915 | 1 | |
| Aldor, Elisabeth | Elisabeth Aldor | Actor | 1961 | 1 | |
| Aldori, Imre, | Imre Aldori | Actor | 1931 | 1 | |
| Aldous, Brian | Brian Aldous | Lighting Designer | 1993 - 1996 | 2 | |
| Aldous, Robert | Robert Aldous | Actor | 1997 - 1998 | 4 | |
| Aldred, Rebecca | Rebecca Aldred | Actor | 2013 | 1 | |
| Aldredge, Theoni V. | Theoni V. Aldredge | Costume Designer | 1960 - 1982 | 8 | |
| Aldredge, Thomas | Thomas Aldredge | Actor | 1952 | 1 | |
| Aldredge, Tom | Tom Aldredge | Actor | 2001 | 1 | |
| Aldrete Jr., Willy | Willy Aldrete Jr. | Actor | 1980 | 1 | |
| Aldrete L., Guillermo | Guillermo Aldrete L. | Designer | 1980 | 1 | |
| Aldrete, Rosita | Rosita Aldrete | Actor | 1980 | 1 | |
| Aldrich, Andrea | Andrea Aldrich | Actor | 2008 | 1 | |
| Aldrich, Jr., Raymond, E. | Raymond E. Aldrich, Jr. | Actor | 1951 | 1 | |
| Aldrich, Ulla, | Ulla Aldrich | Actor | 2002 | 1 | |
| Aldridge, Amanda | Amanda Aldridge | Costume Designer | 1991 | 1 | |
| Aldridge, Claudia | Claudia Aldridge | Actor | 1935 - 1936 | 2 | |
| Aldridge, Dennis | Dennis Aldridge | Actor | 2011 - 2013 | 10 | |
| Aldridge, Fiona, | Fiona Aldridge | Actor | 2003 | 1 | |
| Aldridge, Heather | Heather Aldridge | Actor | 1998 | 1 | |
| Aldridge, Michael | Michael Aldridge | Actor | 1977 | 1 | |
| Alecsandrescu, Dan | Dan Alecsandrescu | Director | 1969 - 1994 | 5 | |
| Alecsandrescu, Stanca, | Stanca Alecsandrescu | Actor, Director | 1923 - 1926 | 7 | |
| Alegiani, Costanza | Costanza Alegiani | Musician | 2010 | 1 | |
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