| Title |
Playwright |
Genre |
Cast |
Length |
| I BEQUEATH | Strath McKnight | one act3W 4M | | |
| I CAN GIVE YOU A BED | Rosalie Carey | Comedy | 3W 5M | full length |
| I DIDNT ASK TO GROW OLD | Gary Langford | Drama | 2W 1M | one act |
| I LOVE MY LITTLE BLACK WIDOW | James V. Edwards | full length3W 3M | | Playmarket |
| I LOVE YOU SYLVIA PLATH | Gary Langford | Drama | 4W 5M | full length |
| I SAW A DREAM | Alice Glenday | one act4W | | |
| I SUSPECT WE'RE RIDICULOUS | Debbie Graham | Drama | 1W 1M | one act |
| I WAS A BIG MAN YESTERDAY | Brian Turner | Drama | 2W 1M | one act |
| I'LL SETTLE FOR ONE | Karl Bradley | Comedy | Cast 8 | one act |
| IDENTIKIT | Marjorie Brooke-White | Comedy | 2W 2M | one act |
| IDOL ADULTERY | Jeff Addison | Comedy | 3W 3M | full length |
| IF I BOUGHT HER THE WOOL | Gordon Dryland | Comedy | 2W 3M | full length |
| IMMORTAL PART, THE | Rosalie Carey | one act1W 1M | | |
| IMPOSSIBLE TO TELL | Barbara Anderson | Drama | 2W 2M | one act |
| IN CAMERA | Richard Boraman | Sketch | 2M | One Act |
| IN CONFIDENCE: (Dialogues with Amy Bock) | Fiona Farrell | Drama | 6W (doubling) | full length |
| IN GREAT SPIRIT | June Allen | Farce | Cast 6or 25 characters | full length |
| IN SEARCH OF KIWI MAGIC | Diane Francis | Childrens | 7W 7M dancers,singers,marching girls | two act, (10 scenes) |
| IN THE BALANCE | Kathleen Ross | Drama | 2W 2M | one act |
| IN THE DEEP END | Michaelanne Forster | Comedy | 2W 1M | one act |
| IN THE NAME OF THE BUTTERFLY | Gaelyn Gordon | full length1W 1M 1extra | | The Author |
| IN THE SHADOW OF THE ISLAND | Geoff Shepherd | one actCast 20 | | The Author |
| IN THE WILDERNESS WITHOUT A HAT | Hone Tuwhare | Drama | 9W 10M | full length |
| IN TRANSIT | Campbell Smith | Comedy | 2W 2M | one act |
| INCIDENT IN SECTOR 4198 | Peter A. Christian | Drama | 5M | full length |
| INDIANS: (Double bill with Cowboys) | Alan Trussell-Cullen | Comedy | 1W 1M | one act |
| INQUISITION DIES:THE | Pedro Elgardo Rojo and Peter Hawes | Drama | Cast 7 | full length |
| INSIDE THE OUTSIDE IN | Marjorie Brooke-White | Drama | 3W 5M | one act |
| INSTANT EXPOSURE | John Curry | Drama | 1W 3M | Three one acts |
| INTERGALATIC JELLYBEANS-IT'S THE CIRCUS | Alan Williamson | one act20 characters | | |
| INTERPLAY 85: (see under titles) | BLACK IS A SHADE OF GREY 2 girls | 8 12 year oldsCharles McGuinessNZ 1985 | | Childrens t |
| INTERVIEW | | Sketch | 1W 1M | One Act |
| INTERVIEW (Reversals) | Gary Langford | Playmarket | | |
| INTERVIEW, THE | Andre Surridge | Theatre of the Absurd. | 3W 4M | one act |
| INVADERS | Margaret Beames | Drama | 2W 3M | one act |
| INVITATION TO A FUNERAL | Julie McKee | Comedy | 2W | one act |
| INVITATION TO A SECOND CLASS CARRIAGE | Anthony McCarten | Comedy | 3W 6M | full length |
| IRIRANGI BAY | Riwia Brown | Drama | 2W 1M | full length |
| IRIS | Joy McDougal | one act4W | | |
| IRISH CASE IN BRIEF | Elizabeth Moir | Drama | 1W 2M | one act |
| IRON MAIDEN, THE | Chris Else | Drama | 2W 2M | full length |
| IRONING ROOM, THE | Jean O. Hill | | 6W | one act |
| IRONMONGER'S DAUGHTER, THE | Margaret Bremner | Comedy | 7/8W 4/5M | full length |
| IRONMONGER'S DAUGHTER, THE (shorter version) | Margaret Bremner | | | |
| ISLAND, THE | Menton Hodge | | 7W 11M | full length |
| ISLAND, THE | Raewyn Gwilliam | | 2W 1M | full length |
| IT HAS BEEN DECIDED | Mollie Elder | | 4W | one act |
| IT ISN'T CRICKET | Robert Lord | Drama | 2W 4M | full length |
| IT TAKES A LOT MORE TO BE ONE (They're Playing Our Song) | Jennifer Compton | Comedy | 1W 1M | full length |
| IT'S A MAN'S WORLD | Kathleen Healey | | 1W 4M | one act |
| IT'S ALIVE | Ken Hudson | Comedy | 1W | one act |
| IT'S ALL IN THE MIND | Beryl Dowson | | 3W 3M | one act |
| IT'S DONE WITH MIRRORS | Harold Pointer | | 5W | one act |
