| Ibsen, Henrik (7) | Iconis, Joe (2) | Idle, Eric (5) |
| Ierley, Merritt (1) | II, Dennis A. Allen (1) | III, David Barr (2) |
| Iizuka, Naomi (2) | Ingber, David (1) | Inge, William (1) |
| Inman, Robert (6) | Intrabartolo, Damon (1) | Ionesco, Eugene (8) |
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| Irving, Washington (4) | Irwin, Will (1) | Isherwood, Christopher (3) |
| Ives, David (3) | ||