Nai

Nai may refer to:

• Nai (caste), a clan/caste in India
• Nai language, a language of Papua New Guinea
• Nai (album), an album by singer Anna Vissi
• Nai (pan flute), a wind instrument, also known as the Moldavian pan flute
• Nai, Rajasthan, a village in India
• Nai, Iran, a village in Razavi Khorasan Province, Iran
• "Nai" (song), a 2007 CD single by Irini Merkouri
• ney (also ney, nye, nay), a wind instrument, more precisely an end-blown flute
• Nai, a Thai feudal title

NAI may refer to:

• NASA Astrobiology Institute (NAI), an organization supporting research of life in the universe
• National Amusements, Inc, a privately owned media and entertainment company
• National Archives of India (NAI), the official archives of the government of India
• National Association for Interpretation (NAI), a professional organization of interpreters
• Natural Alternatives International, the company which manufactures the nutritional supplement Juice Plus
• Network Access Identifier (NAI), an Internet standard defined in RFC 4282
• Network Advertising Initiative, an industry trade group that develops self-regulatory standards for online advertising
• North Allegheny Intermediate High School
• Network Associates, Inc. (NAI), a corporation now known as McAfee, Inc
• Neutral Atom Imaging, a technique used to image magnetospheric and ionospheric plasma populations
• North Adria Aviation in the ICAO airline designator nomenclature
• Netherlands Architecture Institute, a Dutch architecture institute in Rotterdam
• New Atlantic Initiative, an international nonpartisan organization dedicated to revitalizing and expanding the Atlantic community of democracies
• Non-accidental injury