
| Name | Show | Role Size | Age | Gender | Voice |
| Ah Lung | Hit the Deck | N/A | - | male | |
| Aida | Aida | lead | 19 - 29 | female | mezzo |
| Aimable Castagnet | The Baker's Wife | lead | 40 - 55 | male | tenor |
| Airie | The Robber Bridegroom | cameo | - | female | |
| Airy | The Love Note | lead | 9 - 12 | N/A | tenor |
| Aisha Newton | Amen Sister | supporting | 26 - 35 | female | spoken |
| Ajax | The Golden Apple | N/A | - | male | |
| Ajax | Troilus and Cressida | supporting | 25 - 35 | male | spoken |
| Akaash | Bombay Dreams | lead | 23 - 33 | male | |
| Akhnaten | Akhnaten | lead | 16 - 28 | male | countertenor |
| Ako | Kwamina | supporting | 25 - 35 | male | |
| Akufo | Kwamina | cameo | - | male | |
| Al | The Most Happy Fella | cameo | 18 - 50 | male | bass |
| Al | A Chorus Line | supporting | 22 - 32 | male | baritone |
| Al | Golden Boy | N/A | - | male | |
| Al Calinda | Working | supporting | - | male | tenor |
| Al Cleveland | Very Good Eddie | N/A | - | male | |
| Al Kaye | Tip-Toes | N/A | - | male | |
| Al Lewis | The Sunshine Boys | lead | 60 - 80 | male | |
| Al Shean | Minnie's Boys | N/A | - | male |