NDFA
| Acronym | Definition |
|---|---|
| NDFA | National Development Finance Agency (est. 2003; Ireland) |
| NDFA | Non-Deterministic Finite Automaton |
| NDFA | Non-Drafted Free Agent (various sports) |
| NDFA | North Dakota Firefighters Association |
| NDFA | Nitrogen Derived from Atmosphere |
| NDFA | Nanoscale Devices Fundamentals and Applications (NATO Advanced Research Workshop; publication) |
| NDFA | Nathalia and District Football Association |