| Abbreviation | Definition |
|---|---|
| JONSIS | Joint North Sea Information System |
| JONSWAP | Joint North Sea Wave Atmosphere Program |
| JOS | Japanese Ocean Suplex |
| JOSS | The Joint Office For Science Support |
| JPOTS | Joint Panel on Oceanographic Tables and Standards |
| JSC | Johnson Space Center |
| JSC | Joint Scientific Committee for the WCRP |
| JTRE | JIMAR Tsunami Research Effort |
| KAYAK | Koupler And Yet Another Koupler |
| KH | Kelvin-Helmholtz |
| KNMI | Royal Netherlands Meteorological Institute |
| KODC | Korea Oceanographic Data Center |
| KORDI | Korea Ocean Research and Development Institute |
| KPAD | Kerala Pet & Aquarium Dealers |
| KW | Kinematic Wave |
| LAC | Lolal Area Coverage |
| LADCP | Lowered Acoustic Doppler Current Profiler |
| LAHM | Limited Area HIBU ( Hydrological Institute And Belgrade University) Model |
| LAM | Limited Area Model |
| LANDSAT | Land Satellite |