| Rank | Abbreviation | Meaning |
|---|
| ***** | CTAT | Complementary to Absolute Temperature
| |
| **** | CTAT | Capillary Tube Agglutination Test
| |
| *** | CTAT | Center for Technical Assistance and Training
| |
| *** | CTAT | Controlled Technology Access and Transfer
| |
| ** | CTAT | Controlled Technology and Transfer
| |
| * | CTAT | Cetyl Trimethyl Ammonium Tosylate
| |
| * | CTAT | Cable Twist Accuracy Technology
| |
| * | CTAT | Computerized Transverse Axial Tomography
| |
| * | CTAT | Communication and Theatre Arts
| |
| * | CTAT | Computerized trans Axial Tomography
| |
| * | CTAT | County Treasurers Association of Texas
| |
| * | CTAT | Certified Teacher of the Alexander Technique
| |
| * | CTAT | Coalition Technical Assistance and Training
| |
| * | CTAT | Corrections Technical Assistance and Training
| |
| * | CTAT | Career Technology Association of Texas
| |
| * | CTAT | Center for Teaching Arts and Technology
| |
| * | CTAT | Correctional Technical Assistance and Training
| |
| * | CTAT | Cognitive Tutor Authoring Tool
| |
| * | CTAT | Cadastral Technical Advisory Team
| |
| * | CTAT | Career and Technology Administrators of Texas
| |
| * | CTAT | Creative Training Accelerating Talent
| |
| * | CTAT | China Tibet Adventure Tour
| |
| * | CTAT | closed thoracoabdominal trauma
| |