- DNSI stands for Direction Nationale de la Statistique et de l’Informatique (French: National Directorate of Statistics and Informatics; Mali)
- DNSI stands for Direct-Normal Solar Irradiance (solar energy)
- DNSI stands for Discrimination and National Security Initiative (Pluralism Project; Harvard University; Cambridge, MA)
- DNSI stands for Defense Nuclear Surety Inspection
- DNSI stands for Digital Network Services, Inc.
- DNSI stands for Digital Network System Information
- DNSI stands for Defense Nuclear Standardization Inspection
DNSI