| Abbreviation | Definition |
|---|---|
| KSI | KidSave International |
| KSI | Kingdom of the Seraphine Isles |
| KSP | Kentucky Solar Partnership |
| KTCT | Kawartha TransCanada Trail [Ontario, Canada] |
| KTF | Kidpower Teenpower Fullpower |
| KTFB | King Township Food Bank (Ontario, Canada) |
| KTFI | Kidpower Teenpower Fullpower International |
| KTHS | King Township Historical Society (Ontario, Canada) |
| KuALA | Koalisi untuk Advokasi Laut Aceh |
| KWID | Kabale women in Developmen |
| KWNPF | Kent Waldrep National Paralysis Foundation |
| KWRIS | Karen Wyckoff Rein in Sarcoma Foundation |
| KWWA | Kentucky Wood Waste Alliance |
| KYCOC | Kentucky Corps of Chaplains |
| LAB | Language Across Borders |
| LAB | League of American Bicyclists |
| LABOR | Labor Alliance for Better Order and Reform |
| LACADA | Lapeer Area Citizens Against Domestic Assault |
| LACDC | Los Angeles Child Development Center |
| LACE | Ladies At Cornerstone Encouraging |