| Rank | Abbreviation | Meaning |
|---|
| ***** | ISCT | International Society of Chelation Technicians
| |
| ***** | ISCT | immersed sealed glass capillary tube
| |
| ***** | ISCT | Integrative Social Contract Theory
| |
| ***** | ISCT | Institute for the Study of Conflict Transformation
| |
| ***** | ISCT | Institute of Science Technology
| |
| ***** | ISCT | International School of Computer Technology
| |
| ***** | ISCT | Industria Sarmei Campia Turzii
| |
| ***** | ISCT | Investec Stock Commodity Trading
| |
| **** | ISCT | International Society of Chen Taijiquan
| |
| **** | ISCT | Israeli Society for Combinatorial Technology
| |
| **** | ISCT | Intelligence Support to Counter Terrorism
| |
| **** | ISCT | Institute for the Study of College Teaching
| |
| **** | ISCT | International Society of Cleaning Technicians
| |
| *** | ISCT | International Society of Cell Therapy
| |
| *** | ISCT | Infinite Shanghai Communication Terminals Ltd.
| |
| *** | ISCT | Institute for Systemic Coaching and Training
| |
| ** | ISCT | Important to Safety Criteria Task
| |
| ** | ISCT | Inner seal collar tool
| |
| ** | ISCT | Image Sequence Color Transfer
| |
| * | ISCT | If Saddlebags Could Talk
| |
| * | ISCT | International Society for the Classical Tradition
| |
| * | ISCT | Italian Style Ceramic Tiles
| |
| * | ISCT | Individual Serving Capacity Tests
| |