- DMSA stands for Dimercaptosuccinic Acid
- DMSA stands for Deux-Montagnes Softball Association (Canada)
- DMSA stands for DoE Material Storage Areas
- DMSA stands for Dual Meander-Sleeve Antenna
- DMSA stands for Department of Multicultural Student Affairs (various locations)
- DMSA stands for DNA Mobility Shift Assay (protein)
- DMSA stands for Seaman Apprentice, Draftsman-Illustrator Striker (Naval Rating)
DMSA