| Abbreviation | Definition |
|---|---|
| CDT | Chanhassen Dinner Theatres |
| CHT | City Hall Theatre |
| CHT | Component Home Theater |
| CKT | Cafeteria Kids Theater |
| CLTP | Cheyenne Little Theatre Players |
| CM | Character Mode |
| CMFT | Center for Media Film and Theatre |
| CMTC | Comm Media Theatre Comm |
| CMTP | Confidential Musical Theatre Project |
| COT | Chicago Opera Theater |
| CPT | Cleveland Public Theatre |
| CQT | Conseil québécois du théâtre |
| CRDT | Charlotte Repertory Dance Theatre |
| CRT | Connecticut Repertory Theatre |
| CRT | Cortland Repertory Theatre |
| CRT | Creede Repertory Theatre |
| CST | Ceramic Studio Theatre |
| CST | Chicago Shakespeare Theater |
| CST | Chicago Shakespeare Theatre |
| CSTD | Communication Studies Theatre and Dance |