GLK may refer to:
Places Abdullahi Yusuf Airport, serving Galkayo, Somalia Gay and Lesbian Kingdom of the Coral Sea Islands, a micronation established as a symbolic political protest by a group of gay rights activists based in Australia
People The Gaslamp Killer (born 1982), American record producer
Others Glk (software), a portable API for text interfaces Gilaki language (ISO 639-3: glk), a Caspian language, and a member of the northwestern Iranian language branch, spoken in Iran's Gilan Province Glucokinase, an enzyme that facilitates phosphorylation of glucose to glucose-6-phosphate. Mercedes-Benz GLK-Class, a German sport utility vehicle