| Acronym | Meaning |
| PCT | Congolese Labor Party (Republic of the Congo) |
| PCT | Paris Convention Treaty |
| PCT | Patent Cooperation Treaty (International Patent Cooperation Union) |
| PCT | Peace Corps Trainee |
| PCT | People-Centred Technologies (Canada) |
| PCT | Percent Crop Treated (agriculture statistic) |
| PCT | Personal Computer Tape |
| PCT | Personnel Control Team |
| PCT | Pest Control Team |
| PCT | Physical-Chemical Treatment |
| PCT | Platform Contribution Transaction (US IRS) |
| PCT | Potomac Consolidated TRACON (FAA) |
| PCT | Praceta (Portuguese: courtyard; postal usage) |
| PCT | Precinct |
| PCT | Precinct (election district) |
| PCT | Primary Care Trust (UK National Health Service) |
| PCT | Product Consistency Testing |
| PCT | Production Conformance Test |
| PCT | Program Control Team (US DoD) |
| PCT | Project Core Team (various organizations) |