English abbreviations from gls to gm
- GLS (GPS Landing System)
- GLSEN (Gay Lesbian Straight Educational Network)
- GLSL (Greater Louisville Soccer League)
- GLSS (Ghana Living Standards Survey)
- GLT (GLT Log)
- GLTA (Gay and Lesbian Tennis Alliance)
- GLTC (Great Lakes Training Center)
- GLTD (Ground Laser Target Designator)
- GLU (GPS landing unit)
- GLUE (Generate, Lure, Upgrade, and Excite)
- GLUL (Greater Lansing (Michigan) Urban League)
- GLUT (OpenGL Utility Toolkit)
- glv (Manx language (ISO 639-2 code))
- GLW (Glasgow Municipal Airport)
- GLWA (Gay and Lesbian Welfare Association)
- GLWC (Good Life Web-Centric Newsletter)
- GLWD (God's Love We Deliver)
- GLWF (Great Lakes Wrestling Federation)
- GLWI (Great Lakes Water Institute)
- GLWL (Great Lakes Warhammer league)
- GLWP (Gamma Live Wire Professional)
- GLWR (Great Lakes Weimaraner Rescue)
- GLWT (OpenGL Window Toolkit)
- GLWW (Gospel Light WorldWide)
- GLWX (Gamma Life Wire XP racquet)
- GLX (Gamarmalamo Airport (Galela Airport))
- GLY (Goldsworthy Airport)
- GLZ (Gilze-Rijen Air Base)
- GM (Gunner's Mate)