Posted in Business & Finance, Government & Military, Information Technology, Organizations 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)