SLD
- Delta8-fatty-acid desaturase
- Democratic Left Alliance (Poland)
- Democratic Left Association
- Learning disability
- Liberal Democrats (UK)
- SLD glass
- SLD resolution
- Salford Crescent railway station
- Second-level domain
- Self love deficient
- Simple learning design 2.0
- Single-line diagram
- Sliač Airport
- Soft laser desorption
- Specific learning disability
- Stanford Large Detector
- Statute law database
- Straight-line diagram
- Styled Layer Descriptor
- Superluminescent diode
- Sutherland railway station