NNV

NNV may refer to:

• Natal Naval Volunteers, a British Royal Navy unit of the Boer War abbreviated "NNV"
• National Naval Volunteers, a United States Navy reserve force of the World War I period commonly abbreviated "NNV"; see United States Navy Reserve
• Norwegian Society for the Conservation of Nature (Norwegian: Norges Naturvernforbund), also known as Friends of the Earth Norway and commonly abbreviated "NNV," the largest Norwegian environmental organization
• Number needed to vaccinate, a metric used in the evaluation of vaccines and in the determination of vaccination policy, commonly abbreviated "NNV"

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