- DSFI stands for Dual Stage Fuel Injection (motorcycles)
- DSFI stands for Danish Stream Fauna Index (Denmark)
- DSFI stands for Dual Sequential Fuel Injection (engine)
- DSFI stands for Derogatis Sexual Functioning Inventory (research questionnaire)
- DSFI stands for Dharma Samudera Fishing Industry (Indonesia)
- DSFI stands for Développement Service et Formation Internet (French: Internet Training and Development Service)
- DSFI stands for Doug Stewart Flight Instruction, Inc. (South Egremont, MA)
- DSFI stands for Detroit Summer Finance Institute (Detroit, MI)
- DSFI stands for Divine Science Federation International (St. Louis, MO)
DSFI