SLN

SLN may refer to:

• SLN (gene), known as Sarcolipin
• Dutch Sign Language
• Société Le Nickel, a French mining company
• Solid lipid nanoparticle
• Sri Lanka Navy
• Salina Municipal Airport, Kansas, US, IATA code
• SYBYL Line Notation for chemical structures
• Extension for an Asterisk audio file format