Look up nai in Wiktionary, the free dictionary.

Nai or NAI may refer to:

• Nai (album), an album by singer Anna Vissi
• Nai (pan flute), a wind instrument, also known as a pan flute (Romania and Moldova)
• "Nai" (song), a 2007 CD single by Irini Merkouri

• National Academy of Inventors, a US non-profit organization dedicated to encouraging inventors in academia.
• NASA Astrobiology Institute, an organization supporting research of life in the universe
• National Amusements, Inc, a privately owned media and entertainment company
• National Association for Interpretation, a professional organization of interpreters
• Natural Alternatives International, the company which manufactures the nutritional supplement Juice Plus
• Netherlands Architecture Institute, a Dutch architecture institute in Rotterdam
• Network Advertising Initiative, an industry trade group that develops self-regulatory standards for online advertising
• Network Associates, Inc., a corporation now known as McAfee, Inc.
• New Atlantic Initiative, a defunct arm of the American Enterprise Institute
• Norwegian Air International, an Irish airline

• Nairobi
• Nai, Rajasthan, a village in India
• Nai, Razavi Khorasan, a village in Razavi Khorasan Province, Iran
• County of Nairn, Scotland, Chapman code NAI

• Network Access Identifier, an Internet standard defined in RFC 4282
• Sodium iodide, a white, crystalline salt
• NaI Scintillator

• Nai (caste), in India
• Nai (noble title), a Thai noble title
• Nai language, a language of Papua New Guinea
• National Archives of India, the official archives of the government of India
• North Adria Aviation (ICAO code), a Croatian airline
• North Allegheny Intermediate High School, in McCandless, Pennsylvania
• Nai, or three-legged softshell turtle, from Chinese mythology

• All pages with titles beginning with Nai
• All pages with titles containing Nai
• Nay (disambiguation)
• Ney (disambiguation)
• Nal (disambiguation)

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