NNV may refer to:
- Natal Naval Volunteers, a British Royal Navy unit of the Boer War
- National Naval Volunteers, a United States Navy reserve force of the World War I period; see United States Navy Reserve
- Netherlands Physical Society (Dutch: Nederlandse Natuurkundige Vereniging)
- Norwegian Society for the Conservation of Nature (Norwegian: Norges Naturvernforbund), also known as Friends of the Earth Norway, the largest Norwegian environmental organization
- Number needed to vaccinate, a metric used in the evaluation of vaccines and in the determination of vaccination policy
This disambiguation page lists articles associated with the title NNV.If an internal link led you here, you may wish to change the link to point directly to the intended article. Category: