|
| Ms. Maria Abajian (soprano): 1979 |
| Ms. Tiffany Abban (soprano): 2001 |
| Mr. Tom Acord (tenor): 1972 |
| Mr. Robert Adrien (tenor): 1958, 1959 |
| Mr. Edward Albert (baritone): 1991 |
| Mr. Kyle Albertson (bass-baritone): 2006 |
| Mr. Brad Alexander (baritone): 1999, 2001 |
| Ms. Diane Alexander (soprano): 1986, 1991 |
| Ms. Mary Margaret Alexander (soprano): 1961 |
| Mr. Ryan Allen (baritone): 1973, 1974 |
| Ms. Patti Allison (soprano): 1972 |
| Mr. Francisco Almanza (tenor): 1997, 1998 |
| Mr. Andrew Altenbach (apprentice coach): 2006 |
| Mr. Scott Altman (bass): 1998 |
| Ms. Donna Ames (mezzo-soprano): 1987 |
| Mr. John Ames (bass): 1998 |
| Ms. Norah Amsellem (soprano): 1994 |
| Mr. Winther Andersen (baritone): 1954 |
| Mr. Brian Anderson (tenor): 1999, 2000 |
| Mr. Kevin P. Anderson (tenor): 1983, 1984 |
| Mr. Raeder Anderson (baritone): 1969 |
| Mr. Sean Anderson (baritone): 2002 |
| Ms. Milla Andrew (soprano): 1957 |
| Mr. David Anglin (apprentice coach): 1989 |
| Ms. Christine Anton (soprano): 1969 |
| Ms. Jane Archibald (soprano): 2003 |
| Ms. Mary Beth Armes (soprano): 1966 |
| Ms. Karen Armstrong (soprano): 1965 |
| Ms. Eugenia Arsenis (apprentice stage director): 2007 |
| Ms. Meredith Arwady (contralto): 2002, 2003 |
| Ms. Tami Asakura (soprano): 1970 |
| Mr. Brian Asawa (countertenor): 1991 |
| Ms. Sharon Atack (soprano): 1971 |
| Mr. Peter L. Atherton (baritone): 1978 |
| Mr. John Autry (baritone): 1995 |
