| Abbreviation | Definition |
|---|---|
| K | Kelvin |
| K | Kreosote |
| K | Potassium |
| Ka | Acid Dissociation Constant |
| KA | Kinetic Atom |
| KA | Korean American |
| KAD | Kojic Acid Dipalmitate |
| KC | Kitchen Culture |
| KCAC | Krebs Citric Acid Cycle |
| KCL | Potassium Chloride |
| KCMP | Kyrgyz Chemical Metallurgical Plant |
| KCN | Potassium Cyanide |
| KCNS | Potassium ThioCyanate |
| Kd | Dissociation constant |
| Keq | Equilibrium constant |
| KES | Kolbe's Electrolysis (organic chemistry) |
| KF | Potasium Flouride |
| KFHF | Potassium Fluorine Hydrofluoric acid |
| KFUPM | King Fahd University of Petroleum and Minerals |
| KG | KiloGram |