| Rank | Abbreviation | Meaning |
|---|
| ***** | TCSA | Toronto Chinese Soccer Association
| |
| ***** | TCSA | Taiwan Chinese Student Association
| |
| ***** | TCSA | Tri-City Soccer Association
| |
| **** | TCSA | Trophy Club Soccer Association
| |
| **** | TCSA | Trails Club of South Africa
| |
| *** | TCSA | Total Coal South Africa
| |
| *** | TCSA | Training Center for Sustainable Agriculture
| |
| *** | TCSA | Telecommunications Systems Control Association
| |
| *** | TCSA | tumour-derived colon-specific antigen
| |
| ** | TCSA | Taxi Council South Australia
| |
| ** | TCSA | Tri-State College of Acupuncture
| |
| * | TCSA | Theoretical Computer Science Algorithms
| |
| * | TCSA | Tcs Group Holding Plc (London Stock Exchange [LSE])
| |
| * | TCSA | Triton College Student Association
| |
| * | TCSA | Turbine Control Service Associates, Inc.
| |
| * | TCSA | Terran Confederation Service Academy
| |
| * | TCSA | Technology Competency Self Assessment
| |
| * | TCSA | The Cheese Stands Alone
| |
| * | TCSA | Taleo Certified System Administrator
| |
| * | TCSA | Tribal Child Support Agency
| |
| * | TCSA | Tulane Chinese Student Association
| |
| * | TCSA | The Commissioners Seal of Approval
| |
| * | TCSA | Toronto City Summit Alliance
| |
| * | TCSA | Trent Central Student Association
| |
| * | TCSA | Texas Council of School Attorneys
| |