| Abbreviation | Definition |
|---|---|
| KQ | Kinetic Quantity |
| KR | Knowledge Reference |
| KS | Kinetic Separation |
| KS | Kinetic Spectrophotometry |
| KS | Kinetic Stability |
| KT | Kinetic Theory |
| KT | Knowledge Tree |
| KTH | Kinetic Theory of Heat |
| L | Liquid |
| L.H.D | Doctor of Humane Letters |
| L.Mus.,A. | Licentiate in Music, Australia |
| LA | Language Arts |
| LAE | Licenced Aircraft Engineer |
| LBSE | Lichtbergschule Eiterfeld |
| LBSW | Licensed Baccalaureate Social Worker |
| LCIBSE | Licentiate Chartered Institution of Building Services Engineers |
| LDS | Licence in Dental Surgery |
| LEDI | Laboratory Electronic Data Interchange |
| LETiD | Learning Everyday Till i Die |
| LFPS | Certification in Lean and Flexible Production Systems |