NHI

• National Health Index (NHI) Number, a unique identifier used in the New Zealand health system
• National Health Insurance, or a specific national scheme:
• National Health Insurance (British Virgin Islands)
• National Health Insurance Scheme (Ghana)
• National Health Insurance (Japan) {{Nihongo|国民健康保険|Kokumin-Kenkō-Hoken|}}
• National Health Insurance Scheme (Nigeria)
• National Health Insurance (South Africa)
• National Health Insurance (Taiwan) 全民健康保險（chuan min chien kang pao hsien)
• National Holistic Institute, in the United States
• Nourishing Herbal Infusion

• Nederlandse Helikopter Industrie, a Dutch manufacturer of helicopters
• NHIndustries, a manufacturer of helicopters

• National Hispanic Institute in the United States, a think-tank focused on the leadership development of young Latinos
• National Historical Institute, in the Philippines
• New Horizon Interactive, a video games company, which has developed the popular Club Penguin MMOG
• Non-human intelligence, a term encompassing the intellectual abilities of anything outside of humanity

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