| Abbreviation | Definition |
|---|---|
| NST | Nuffield Southampton Theatres |
| NTAC | Newport Theatre Arts Center |
| NTC | National Theatre for Children |
| NTCC | National Theatre Company of China |
| NTCI | Norwich Theater Company Inc |
| NTD | National Theatre of the |
| NTG | Neighborhood Theater Group |
| NTI | National Theater Institute |
| NTNG | National Theater of Northern Greece |
| NTNG | National Theatre of Northern Greece |
| NTOB | National Theatre of Brent |
| NTOS | National Theatre Of Scotland |
| NTP | National Theater Project |
| NTS | National Theatre School of Canada |
| NTWH | National Theatre Workshop of the Handicapped |
| NURT | Niagara University Repertory Theatre |
| NYTB | New York Theatre Ballet |
| NYTC | National Youth Theatre Company |
| NYTW | New York Theatre Workshop |
| OAT | Open Air Theatre |