- DSPI stands for Digital Speckle Pattern Interferometry
- DSPI stands for Direction et Synthèse de Projets Immobiliers (French: Management and Synthesis of Real Estate Projects)
- DSPI stands for Défense Sécurité Protection Incendie (French fire extinguisher company)
- DSPI stands for Détection Surveillance Protection Intervention (French security company)
- DSPI stands for Decision Systems Plus, Inc (Des Plaines, IL)
- DSPI stands for Device Server Provider Interface (Symbol Technologies)
- DSPI stands for Deserial Serial Peripheral Interface (computing)
DSPI