Look up nei or NEI in Wiktionary, the free dictionary.

Nei or NEI may refer to:

• Nei, Iran, a village in Ardabil Province, Iran
• Nei, a character in the Phantasy Star II roleplaying game
• Nutrition and Education International
• Nuclear Energy Institute, American nuclear industry lobbying group
• National Eye Institute, one of the US Institutes of Health
• Netherlands East-Indies, also known as the Dutch East Indies
• Northern Engineering Industries, a defunct British engineering firm
• Noise-equivalent irradiance, in astronomy

• Iivo Nei (born 1931), Estonian chess champion
• Masatoshi Nei (born 1931), Japanese population geneticist
• Mati Nei (born 1942), Estonian chess champion
• Nei Kato, Japanese engineer
• Nei (footballer, born 1971), born Valdinei Cunha, Brazilian football goalkeeper
• Nei (footballer, born 1980), born Claudinei Alexandre Aparecido, Brazilian football striker
• Nei (footballer, born 1985), born Claudinei Cardoso Félix Silva, Brazilian football right-back
• Nei (footballer, born 1991), born Jozinei João Machado Rodriguez, Brazilian football attacking midfielder
• Ponto Nei, Japanese VTuber affiliated with Nijisanji

• Nai (disambiguation)
• Neigh (disambiguation)
• Ney (disambiguation)
• Nie (disambiguation)
• Nye (disambiguation)

This disambiguation page lists articles associated with the title Nei.
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