- DPSI stands for Diversified Protection Systems, Inc. (Anaheim, CA)
- DPSI stands for Diploma in Public Service Interpreting
- DPSI stands for Data-Partitioned Secondary Index (IBM)
- DPSI stands for Dash Point Software, Inc. (Seattle, WA)
- DPSI stands for Dots Per Square Inch
- DPSI stands for Dutch Periodontal Screening Index (dentistry)
- DPSI stands for Document de Politique et des Stratégies Industrielles (French: Document Policy and Industrial Strategies)
- DPSI stands for Dynamic Process Solutions, Incorporated
- DPSI stands for Distributed and Pervasive Systems Initiative (UK)
DPSI