NKCA
| Acronym | Definition |
|---|---|
| NKCA | National Knife Collectors Association (est. 1972; Chattanooga, TN) |
| NKCA | Natural Killer Cell Activity (neuroscience) |
| NKCA | National Kidney Cancer Association |
| NKCA | National Kitchen Cabinet Association (Falls Church, VA) |
| NKCA | New Kingston Citizens' Association (Jamaica) |