- DSSL stands for Department of Safety, Security and Liaison (South Africa)
- DSSL stands for Digital Security Systems Lab
- DSSL stands for Dvojezicna Srednja Sola Lendava (Slovenian: Lendava Bilingual High School; Lendava, Slovenia)
- DSSL stands for Distributed Systems Software Laboratory (University of Maryland)
- DSSL stands for Double Sided, Single Layer (DVDs)
- DSSL stands for Document-Style Semantics Specification Language (ISO)
- DSSL stands for Durham Summer Swim League (Durham, NC)
- DSSL stands for Decision Support Systems Laboratory
- DSSL stands for Dynamic IP (Internet Protocol) Spam Sources List (computing)
DSSL