NDF
- Namibian Defence Force
- National Defence Forces
- National Democratic Force
- National Democratic Front (disambiguation)
- National Development Front
- Neighborhood Development Foundation
- Neue Deutsche Filmgesellschaft
- Neutral detergent fiber
- Neutral-density filter
- No defect found
- Non-deliverable forward
- Nordic Development Fund
- Norwegian Association of the Deaf
- Norwegian Defence Force
- SMPTE timecode