slk or SLK may stand for: SLK (gene), a gene that in humans encodes the enzyme STE20-like serine/threonine-protein kinase SLK (group), a British grime music group Adirondack Regional Airport, US (IATA code) Mercedes-Benz SLK, a sports car SilkAir (ICAO code) Slovak language (ISO 639-2 code) SLK, a 2014 album by Stam1na .slk, filename extension for the SYmbolic LinK (SYLK) format Starostové pro Liberecký kraj (Mayors for Liberec Region), Czech political party