GML may refer to: Computing Game Maker Language, the scripting language of Game Maker Generalized Markup Language, a set of macros for the IBM text formatter, SCRIPT Generative Modelling Language, an extension of PostScript used for the concise description of complex 3D shapes Geography Markup Language, an XML grammar to express geographical features Graffiti Markup Language, an XML-based file format that stores graffiti motion data Graph Modelling Language, a hierarchical ASCII-based file format for describing graphs Other uses Canadian Gold Maple Leaf, a gold bullion coin Gilmala Halt railway station (station code), in Pakistan GML Heritage, an Australian heritage consultancy firm Hostomel Airport (IATA code), in Ukraine Gradient multilayer nanofilm, a nanomaterial Grand Medal of Lotus Flower, an honour of Macau Guardian Media Limited, a Trinidadian media company Middle Low German (ISO 639-3 code), a formerly used European language Glycerol monolaurate, a naturally occurring antimicrobial agent