GLB

GLB may refer to:


 * Gay, lesbian and bisexual
 * Girls' Life Brigade, a constituent organization of the Girls' Brigade
 * Gramm–Leach–Bliley Act of the United States Congress
 * Grant Lee Buffalo, an American rock band
 * Greatest lower bound
 * Great Leap Brewing, a Chinese brewery
 * Mercedes-Benz GLB, a sport utility vehicle
 * San Carlos Apache Airport, in Arizona, United States
 * GLB file format (.glb), the binary form of glTF
 * Union of Workers in Food and Allied Industries, a former Austrian trade union
 * Gothic & Lolita Bible, a Japanese fashion magazine and book