| Abbreviation | Definition |
|---|---|
| JSEA | Job Safety Environmental Analysis |
| JSEMC | Joint Services Environmental Management Conference |
| JWES | Jean Wiener Environmental Scholarship |
| JWES | Journal of Water and Environmental Sciences |
| JWU | Jerusalem Water Undertaking |
| KAED | Kuliyyah of Architecture and Environmental Design |
| KAED | Kuliyyah of Architecture and Environmental Development |
| KAED | Kulliyyah of Architecture and Environmental Design |
| KARC | Kingston Area Recycling Center |
| KARC | Kingston Area Recycling Centre |
| KBA | Key Biodiversity Area |
| KCCA | Kettle Creek Conservation Authority [Ontario, Canada] |
| KCFC | Kentucky Clean Fuels Coalition |
| KEAT | King Environmental Action Team |
| KEEN | Kids Environmental Education Network |
| KEEP | Kathmandu Environmental Education Project |
| KEEP | Keep Environmental Enhancement Permanent |
| KEEP | Kern Environmental Education Program |
| KEEP | Kids Encouraging Environmental Protection |
| KEEP | Kids Expect Environmental Protection |