NII
NII may refer to:
- Nauchno - issledowatelski institute, the State Scientific Research Institute of the Soviet Union
- NII Holdings, Latin American mobile operator
- Kokuritsu Jōhōgaku Kenkyujo (English National Institute of Informatics ), Japanese Research Institute of computer science
Nii called:
- Ek Nii, a spoken language in Papua New Guinea
Nii is the surname of the following persons:
- Daiji Nii (born 1973 ), Japanese football player
- Sekinari Nii ( born 1943 ), Japanese politician
- Disambiguation
- Abbreviation