NOI

NOI may refer to:

• Any of the national informatics olympiads used for selection to the International Olympiad in Informatics, including:
  • National Olympiad in Informatics, China, a Chinese annual informatics competition
• Nation of Islam, a black American spiritual and political organization
• Net operating income
• Ngozi Okonjo-Iweala, Nigerian politician
• the Nupe–Oko–Idoma languages subgroup of Volta–Niger languages
• the Northern Oscillation Index

Noi can refer to:

• Noi River in Thailand
• Noi (Eros Ramazzotti), an album by the Italian singer-songwriter Eros Ramazzotti
• Noi the Albino, an Icelandic film by director Dagur Kári
• Naie "Noi" Kasahara of The Wallflower
• Noi is the family name for one of the most respected families in Ghana
• Noi is the Thai word for little
• HDJ Noi "WMNF Tampa Radio DJ"